Choose the best answer to complete each of the following sentence

A. couldn't

B. needn't

C. mustn't

D. can't

A. become

B. will become

C.  have become

D. were becoming

A. not leaving

B. don't leave

C. won't leave

D. not to leave

A. polluters

B. pollutants

C. pollutions

D. pollutes

A. interesting

B. interestingly

C. interested

D. interest

A. on

B. in

C. with

D. upon

A. Ø

B. a

C. the

D. an

A. prosperous

B. vulnerable

C. remained

D. prefect

A. chews and digests

B. reviews

C. dips into

D. swallows

A. slices

B. pages

C. sheets

D. pieces

A. Extinction

B. Survival

C. Conservation

D. Commerce

A. to be rebuilt

B. rebuild

C. rebuilt

D. be to rebuilt

A. owns

B. belongs

C. possesses

D. has

A. No, thanks

B. No, no problem

C. Yes, it is

D. Yes, I would

A. Thanks. I think so.

B. No problem.

C. Thank you. Hope you will drop in.

D. Of course not, It's not costly.