_____ I’m willing to help, I do not have much time available．
| A．While | B．When | C．Once | D．Since |
—I heard a bus accident happened yesterday.
—The bus crashed. Luckily, only a few passengers were _____ injured in the traffic accident.
| A．slightly | B．approximately | C．exactly | D．gradually |
John agreed to the suggestion that his students _____ two weeks to prepare for the exam.
| A．give | B．should give | C．be given | D．must be given |
Great changes have taken place in that school. It’s no longer ___ it was 20 years ago, ____ it was so poor.
| A．what, when | B．that, which | C．what, which | D．which, that |
Dark clouds _______ the sunlight. It seemed as if it was going to rain.
| A．left out | B．picked out | C．blocked out | D．put out |
The little child didn’t understand the ____ question so there was a ____ expression on his face.
| A．puzzling, puzzled | B．puzzle, puzzled |
| C．Puzzling, puzzling | D．puzzled, puzzling |