圆柱螺旋压缩弹簧均可画成右旋，其旋向应在“技术要求”中注明。
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Would you mind ______ me what’s happening here?
A. tell
B. to tell
C. telling
D. to telling
She is too young ______ with the big kids.
A. to playing
B. to play
C. playing
D. to be played
Weather changes a lot here! It’s shining now, but it _______ later.
A. must rain
B. is raining
C. might rain
D. rains
---What can I do for you?----I’m wondering if you ______ my mail while I’m away on a business trip.
A. can pick up
B. will pick up
C. pick up
D. could pick up
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