名校
1 . The head teacher demanded that the blackboard _________ (clean) before every class. (所给词的适当形式填空)
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名校
2 . In February, the Ministry of Education announced that mobile phones should, in principle, ________ (forbid) in primary and secondary schools, which aims to protect students’ eyesight and make sure they focus on their work. （所给词的适当形式填空）
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13-14高二下·四川雅安·阶段练习
3 . The project ______ last month but unfortunately it had to be prolonged because of the financial problem.
| A．needn’t have been finished |
| B．shouldn’t have finished |
| C．could have been finished |
| D．must have finished |
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