单项选择题

(Let's) not waste time on (matters of no important). We have other (vital) problems to (deal with).

A．Let's
B．matters of no important
C．vital
D．deal with
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单项选择题
(Not until) my mother told me (the sad news) last night (did I knew) that our neighbor Dr. Li (was killed) in a car accident the week before.
A．Not until
B．the sad news
C．did I knew
D．was killed
单项选择题
We (wish) that you (didn't have) such a lot of (work), otherwise you (would have enjoyed) the party.
A．wish
B．didn't have
C．work
D．would have enjoyed
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