Giúp mình với
1. ……………from factories is one cause of water pollution.
    a. Waste                     b. Treasure           c. Materials           d. Dynamite
2. Are these pictures ………..sale ?
    a. at                            b. for                    c. in                      d. to
3. ………….is becoming more and more popular on television and the radio.
    a. Avertise                  b. Advertising       c. Avertiser           d. Avertisement
4. The local authorities are trying to ………people to use public buses instead of motorbikes.
    a. achieve                    b. provide             c. reduce               d. persuade
5. You will ……….the soup if you put too much salt in it.
    a. provide                   b. divide               c. spoil                 d. complain
6. Every year , natural………….cause millions of dollars worth of damage.
   a. events                      b. accidents           c. temperatures     d. disasaters
7. He has been already been…………… as a candidate.
    a. called                      b. nominated         c. remembered      d. said
8. Many people become ………….because of the natural disasters every year.
   a. homeland                 b. homesick          c. homeless           d. homework
9. A great ………caused over 50,000 people in Ethiopia to die of starvation last  month.
    a. famine                     b. flood                 c. fire                    d. storm
10. There has been so much rain that some rivers have been burst their banks and there have been …………..
    a. fires                        b. earthquakes       c. floods               d. droughts
11. The new owners had a(n) ……..rewire the house before they moved in.
     a. locksmith               b. electrician         c. carpenter           d. plumber
12. The roof ………….under the weight of snow last night.
    a. collapse                  b. collapsed          c. damage             d. damaged
13. Tornadoes can …………..anything that is in their way.
     a. give up                   b. get up               c. suck up             d. bring up
14. A funnel-shaped storm passing overland below a thunderstorm is called a …….
     a. cyclone                            b. tornado             c. tidal wave          d. volcano
15. I’m driving a map for you ………..you don’t remember the way to my house.
   a. so that                      b. in case               c. even though      d. if only
16. When the rain …………, we’ll go for a walk.
    a. stop                        b. stops                 c. stopped             d. will stop
17. Some people saw him ………..out of town a few hours ago.
    a. driving                    b. to drive             c. drove                d. was driving
18. The accident was seen by some people …………….at a bus stop.
    a. waited                     b. waiting             c. were waiting      d. who waiting
19. I’m thinking ………..a house . Do you think that’s a good idea ?
     a. to buy                    b. of to buy           c. buying              d. of buying