80、We'll go to visit the Great Wall it doesn't rain tomorrow.
A.since B.before C.when D.if
79、Mr Wang has worked there it opened.
A.because B.since C.for D.so
78、The teacher is very tired she is still working very hard.
A.but B.so C.and D.or
77、Tom was very hungry he ate all the cakes.
A.and B.but C.so D.or
76、The stars in the daytime.
A.can't be see B.can't see
C.can't be saw D.can't be seen
75、This watch next Monday.
A.can mended B.can be mended
C.can be mend D.can be mending
74、We catch up with you. Please speak a little more slowly.
A.can B.can't C.may not D.must
73、Don't be late. You be there on time.
A.must B.can C.may D.needn't
72、 you answer the telephone, please?
A.Must B.May C.Need D.Could
71、"You must be here at six tomorrow morning." "Sorry I be here so early."
A.need B.must C.may D.can't