单项选择 较难0.4 引用1 组卷255
Now all of our concentration is on ________ it is that the global environment will return to normal.
| A．which | B．what | C．where | D．when |
15-16高三·江苏南通·阶段练习
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_______ is required that by no means _______ he betray his motherland even if he lacks money or rights.
| A．What; can | B．It; could | C．It; should | D．What; could |
Seldom ________ TV when he studied in senior high school.
| A．he watches | B．he watched |
| C．does he watch | D．did he watch |
_____ for the fact that she got hit by a car and broke her leg on her way to school, she might have passed the exam.
| A．Had it not been | B．Were it not |
| C．Was it not | D．Hadn’t it been |
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