Rich countries have a responsibility towards poor countries and must do _____ they can to help others.

A. no matter what B. whatever            C. all what            D. that

The suggestion ______ the students should learn something practical is worth considering.

A. that            B. what               C. which             D. of which

The new bridge, when ______, will greatly benefit the development of this area.

A. completes       B. completing             C. completed             D. being completed

______ that the air conditioners cause so much pollution, I would never have bought one.

A. If I knew       B. Did I know          C. If I have known      D. Had I known

Not until we know more ______ improve the situation.

A. can we be able to      B. will we be able to     C. we will be able to     D. do we able to

He was very busy yesterday, if not, he ______ you.

A. would help    B. must have helped   C. would have helped  D. might help

Maybe you have been to many countries, but nowhere else ________ such a beautiful place.

A. can you find            B. you could find       C. you can find         D. could you find

Only by changing the way we live ______ the earth.

A. can we be able to save                              B. can we save

C. can we be saved                                        D. we will be able to save

She’s too thin. She _____ gain some weight but she _____ too little.

A. would, ate               B. will, eats                C. would, eats         D. will, ate

How I wish she _____ with me for the next three months!

A. be                         B. should be                  C. will be                   D. could be