单项选择题

What you are doing ______ very important in your work.

A. seemed
B. seems
C. seem
D. is to seem

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单项选择题

You are advised to rise with a yawn and stretch because it will ().

A. help you to keep your energy for the day’s work
B. help you to control your temper early in the day
C. enable you to concentrate on your routine work
D. keep your energy cycle under control all day

单项选择题

If you have trouble () the poems, the notes on the mar gins will help you.

A. to understand
B. understanding
C. for understanding
D. with understanding