单项选择题

The new exams _____ teachers in a lot of extra paperwork.

A. have been involved
B. have involved
C. have been involved in
D. have involved in
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单项选择题
I always ____ the smell of baking ____ my childhood.
A. refer to… as
B. provide…for
C. improve…in
D. associate…with
单项选择题
If you_____ something or someone, you know about them, but not in great detail.
A. won’t hear of
B. have heard of
C. hear from
D. have heard
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