单项选择题
A. laid up B. put back C. set up D. put aside
—She was in class on Friday afternoon, but no one has s...
单项选择题—She was in class on Friday afternoon, but no one has seen her since.—She () an accident.
A. might have B. might have had C. may have D. ought to have had
We must () the United States five years in order to app...
单项选择题We must () the United States five years in order to apply for citizenship.
A. reside in B. accommodate C. invade D. abandon
