题目内容

Don’t forget ______ your teeth before you go to bed.

A. brush
B. to brush
C. brushing
D. brushed

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______ a jacket. It’s cold outside.

A. Taken
B. Took
C. Take
D. Not take

All guests must ______ at the front desk.

A. signing in
B. sign in
C. signed in
D. be signing in

______ leave! We haven’t finished yet.

A. Don’t
B. Not
C. No
Didn’t

______ careful! You almost spilled coffee on me.

A. Being
Be
C. Not be
D. Will be

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