Question

【题目】An awful accident, however, _____occur the other day.

A. does

B. did

C. has to

D. had to

Answer 1

【答案】B

【解析】考查动词的强调形式。，句末的the other day意为“前几天”，所以句子应用过去时态，而选项D填进去不合题意，故选B。however为插入语，可不考虑，did 放在occur前表强调。此题正确答案应选B。