They discussed ________ they could settle the problem without others' help.
| A．if | B．that | C．what | D．whether |
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 |
Robert is interested in ________ astronomy and he wishes he could make a trip into ________ space one day.
| A．the; the | B．an; the | C．an; / | D．/; / |