单项填空 在A、B、C、D四个选项中,选出可以填入空白处的最佳选项。
We should try our best to make ______ world that is safer, cleaner and healthier than ____ one we are living in now.
A. the; / B. a; / C. the; the D. a ;the
D
He made a serious mistake, but he took action to change that _________ it got worse.
A. until B. when C. because D. before
D
_________, when Marx was already ________, he began to learn Russian.
A. In 1870s; in his fifties B. In 1870s; in fifties
C. In the 1870s; in his fifties D. In the1870s; in fifties
C
—You can hardly imagine the pleasure of chatting with friends on Wechat (微信).
—Really? But it ______ cause you much trouble if someone get your personal information.
A. may B. must C. need D. should
A
His speech was so _________ that it makes me feel _________.
A. bored; asleep B. boring; asleep C. boring; sleepy D. bored; sleeping
C
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