refers to the parts of the computer that you can ,see and touch. It is used for the purpose of(69).
A.Software
B.Hardware
C.Hardship
D.Instrument
第1题:
If you had been have yesterday,you______(see)his father.
第2题:
A、*/saw/didn’t
B、Did/see/didn’t
C、Did/saw/didn’t
D、id/see/did
第3题:
A、wouldn’t have seen
B、shouldn’t have seen
C、mustn’t have seen
D、can’t have seen
第4题:
This is very important. You_____remember to shut down your computer every
evenlng。
A. ought
B. need
C. must
D. can
第5题:
A.mustn't
B.can't
C.needn't
第6题:
A.Must; needn’t
B.Can; can’t
C.May; mustn’t
D.Can; mustn’t