Exercise 5​

1.​A. physical​   B. activity​   C. increase​   D. expectancy

2.​A. conform​   ​B. perhaps​​   C. remove​   ​D. various

3.​A. percentage​   ​B. advantage​   ​C. examine​​   D. influence

4.​A. decay​   ​B. purpose​​   C. however​​   D. invention

5.​A. prefer​​   B. electricity​   ​C. invent​​   D. collaborate

6.​A. amazing​   ​B. ability​   ​C. performance​   ​D. television

7.​A. appear​   ​B. audience​​   C. government​​   D. talented

8.​A. painter​   ​B. energy​​   C. express​​   D. boundary

9.​A. inspire​​   B. resign​​   C. dangerous​​   D. exchange

10.​A. commodity​​   B. material​​   C. deposit​​   D. quality

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Exercise 6​

1.​A. petroleum​B. resource​C. occur​D. anger

2.​A. producer​B. consume​C. companion​D. situation

3.​A. attract​B. descend​C. noticeable​D. control

4.​A. widespread​B. anxiety​C. explode​D. alternative

5.​A. direction​B. community​C. garbage​D. utility

6.​A. product​B. convert​C. efficient​D. dispose

7.​A. biological​B. expedition​C. synthetic​D. scientific

8.​A. experiment​B. giant​C. windmill​D. software

9.​A. geometric​B. supply​C. potential​D. pollution

10.​A. destroy​B. disappear​C. development​D. independent

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Exercise 7​

1.​A. extent​B. synonymous​C. admit​D. manuscript

2.​A. inadequate​B. available​C. authority​D. purpose

3.​A. demonstrate​B. responsible​C. simplify​D. celebrate

4.​A. secondary​B. expectation​C. supervision​D. sociologist

5.​A. instead​B. furious​C. campaign​D. apartment

6.​A. balcony​B. accident​C. mechanic​D. survey

7.​A. flexible​B. together​C. domestic​D. relaxed

8.​A. control​B. giant​C. windmill​D. software

9.​A. geothermal​B. experimental​C. elementary​D. geographical

10.​A. attendance​B. compulsory​C. geography​D. similar

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Exercise 8​

1.​A. politics​B. imaginary​C. result​D. annoyed

2.​A. Japan​B. astronaut​C. unfortunate​D. approximate

3.​A. consequently​B. profile​C. initiate​D. project

4.​A. conference​B. announcement​C. arrival​D. reception

5.​A. argument​B. definite​C. museum​D. permanent

6.​A. treatment​B. prevent​C. intelligent​D. acquire

7.​A. affirm​B. rely​C. infection​D. remedy

8.​A. effort​B. distinguished​C. available​D. luxurious

9.​A. physiology​B. economics​C. nominate​D. competition

10.​A. contribution​B. appropriate​C. opportunity​D. anniversary

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Exercise 9​

1.​A. afloat​B. superior​C. passenger​D. contribute

2.​A. chemistry​B. original​C. tribute​D. emphasis

3.​A. sentimental​B. commonplace​C. mathematics​D. information

4.​A. pronounce​B. American​C. soldier​D. prefer

5.​A. muscular​B. instrument​C. dramatic​D. argument

6.​A. magnetic​B. radiation​C. unpleasant​D. equipment

7.​A. distraction​B. considerable​C. recommend​D. description

8.​A. probability​B. attitude​C. technological​D. entertainment

9.​A. emergency​B. encourage​C. shortage​D. distraction

10.​A. natural​B. surplus​C. dynamite​D. decision

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Exercise 10​

1.​A. legacy​B. illuminate​C. humanity​D. commemorate

2.​A. numerous​B. recent​C. telescope​D. forever

3.​A. behaviour​B. predict​C. occurrence​D. environmental

4.​A. mishap​B. evacuate​C. vigorous​D. moderate

5.​A. unspeakable​B. accomplish​C. emotional​D. tendency

6.​A. expression​B. response​C. psychologist​D. vehicle

7.​A. development​B. prevent​C. common​D. avoid

8.​A. supply​B. reliever​C. effective​D. remedy

9.​A. familiar​B. repellent​C. antiseptic​D. survive

10.​A. ingenious​B. device​C. enormous​D. dangerous