Some of these shoals have been disproved and are not charted. Nevertheless mariners should ________ with particular caution in this area.
A.go
B.proceed
C.move
D.remove
第1题:
A dealing with ;
B to deal with ;
C dealt with
第2题:
The Browns _______ the trains; if not, they would have been at the get-together as scheduled.
A、must miss
B、must have missed
C、should miss
D、should have missed
第3题:
A、should not
B、don't need
C、have not
第4题:
A.identified
B.isolated
C.initiated
D.immigrated
第5题:
This medicine()before dinner.
A、should have taken
B、should have been took
C、should be taken
第6题:
I have no idea who stole his wallet. It _____anyone.
A. must have been
B. should have been
C. could have been
第7题:
A、should have been
B、ought to have been
C、must have been
D、can not have been
第8题:
A.been changed
B.changed
C.been changing
第9题:
A.must be
B.must have
C.should be
D.should have been
第10题:
He must have had an accident, or he _____ then
A:would have been here
B:would be here
C:should be here
D:had just had