She brought with her three friends, none of I had ever met before.
A.them |
B.who |
C.whom |
D.these |
We wonder ___________ quite a number of living things are dying out.
A.that |
B.as |
C.why |
D.when |
He was so busy that he couldn’t help ____________ the experiment.
A.doing |
B.do |
C.did |
D.done |
After he ________ the golf club, he has ________ a number of competitions.
A.took part in; taken part in |
B.joined; taken part in |
C.joined in; joined in |
D.joined; joined |
My uncle’s house is much smaller than ours, but it is twice expensive.
A.as |
B.so |
C.too |
D.very |
He seems to Jane. He knows her well.
A.introduce to |
B.be introducing to |
C.be introduced to |
D.have been introduced to |