题目内容
“The light is still on.” The student ________ to switch it off.
A. must forget
B. must have forgotten
C. might forget
D. may forget
答案:B
解析:
解析:
must加完成时表示“(过去)一定……”。
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题目内容
“The light is still on.” The student ________ to switch it off.
A. must forget
B. must have forgotten
C. might forget
D. may forget
must加完成时表示“(过去)一定……”。
|