— The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
— Oh, dear ! She ______ a lot of difficulties !
| A．may go through | B．might go through |
| C．ought to have gone through | D．must have gone through |
Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped.
| A．that; which | B．what; when | C．what; which | D．which; that |
Everyone at the meeting agreed to the suggestion _______ a new bridge _______ built across the river.
| A．that; have been | B．which; would be |
| C．as; should be | D．that; be |
_______ you are familiar with the author’s ideas, try reading all the sections as quickly as possible.
| A．Now that | B．Ever since | C．In case | D．As long as |
— Why does she always ask you for help?
— There is no one else _______, is there?
| A．who to turn to | B．for her to turn |
| C．for whom to turn | D．she can turn to |
In order to be _______ for Christmas, all these gifts must be mailed immediately.
| A．in time | B．at one time | C．at a time | D．in no time |