单项选择题

You should think of yourself instead of ______ others.

A. to obey
B. obey
C. obeying
D. obeyed
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单项选择题
It ______ every day so far this week.
A. rains
B. has rained
C. rained
D. was raining
单项选择题
______, he locked the door and went out to work.
A. Having the meal
B. After had the meal
C. Had the meal
D. Having had the meal
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