1 Americans spent more than $15 billion_____jeans______2005

a.on-in b.in-since c.at-in d.for-in

3.I_____this word up in the dictionary but I 'still don't understand it.

a. took c. brought b. looked d.got

4. We are going to stay here until you ________your work.

a. will finish d. have finished b. are finishing c. finished

5. Vietnamese woman today often prefer to wear modern clothing at work_______ it is more convenient.

a. although b. however c. because b. however

6. The teacher will not punish him_______he keeps on making noise.

c. whether a. unless d. when b.if

7. Will man_______live forever one day?

a. can b. may c. could d. be able to