单项选择题

If ______, these suggestions will make disastrous earthquakes almost a thing of the past.

A. following
B. follow
C. to follow
D. followed
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He rushed into the room, his face ______ with sweat.
A. dripping
B. dripped
C. being dripped
D. was dripping
单项选择题
______their assistance, we would not have finished the task ahead of schedule.
A. Hadn'tbeen for B. Had it not been for C. It hadn't been for
D. Had not it been for
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