--- How much does it ____ to reach Suzhou by bus ?
--- Only 300 yuan .
| A．spend | B．pay | C．cost | D．take |
––David has made much progress in Chinese this year.
––____. He has reached a level which is quite good.
| A．So he has | B．So is he |
| C．So has he | D．So he is |
He found ____ very difficult _____ the problem.
| A．that; to work out | B．this; working out |
| C．himself; work out | D．it; to work out |
—Which sweater can you choose, the blue one or the red one?
—____ is OK, I think. Both go well with my trousers.
| A．Both | B．Either | C．Neither | D．None |
Many more trees should ____ this year.
| A．plant | B．be planted | C．planted | D．be plant |
—____ the workers are very tired, ____they keep on working.
— They are great. We must learn from them.
| A．Because; / | B．Though; / |
| C．Because; so | D．Though; but |