You'd better ______ now.A、doesB、doingC、doD、did

You'd better ______ now.

A、does

B、doing

C、do

D、did


相关考题:

You look(). What () you () ? A、tire, did…doB、tiring, have…doneC、tired, do…doD、tired, have…been doing

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( )A.doB.doingC.to doD.did

以下电话交换系统中继方式图(见图15-2)属于( )中继方式。A. DOD2+BID; B. DOD1+DID;C. DOD2+DID; D. D0D1+DID+BID。