“The Internet will ensure that the children of the future are not going to know______nationalism is,” an expert MIT declared.
| A．how |
| B．that |
| C．what |
| D．as |
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 |