题目
A.fixed
B.to be fixed
C.to fix
D.being fixed
第1题
Whenever new information is entered, it must be stored somewhere in the computer's(70). RAM only(71)the data temporarily. That is, all information stored in the RAM will disappear if you switch the computer off.
A.processor
B.keyboard
C.printer
D.memory
第4题
A.have you
B.must you
C.needn’t you
D.didn’t you
第5题
A. must have been working
B. might be working
C. must work
D. should have worked
第6题
You must have seen her, ___you?
A.haven’t
B.didn’t
C.don’t
D.A or B
第8题
When you go abroad, do you ______ take your passport?
A、have to
B、ought to
C、need
D、must
第9题
A. had better to
B. don’t
C. must not
D. don’t have to
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