What I should do is the task soon.
A、to finish
B、finished
C、be finished
第2题
I really appreciate ()to help me,but I am sure that I will be able to manage by myself.
A、you to offer
B、your offering
C、that you offer
第4题
All the mobile phones must before the meeting begins、
A、turn off
B、be turned off
C、be turning off
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