Dickson left his father’s firm and ____business on his own.
A.started out | B.launched into | C.began on | D.worked at |
—Can we ski on this mountain?
—Of course.However, at no time _______ you do so alone.
A.could | B.might |
C.need | D.must |
He _______ have completed his work;otherwise, he wouldn’t be enjoying himself by the seaside.
A.should | B.must |
C.wouldn’t | D.can’t |
He must have been late for the conference yesterday, _______?
A.didn’t he | B.hasn’t he |
C.mustn’t he | D.wasn’t he |
He _______ more visits to his parents.He has been regretting not doing so since they passed away.
A.should pay |
B.would pay |
C.should have paid |
D.would have paid |
Some aspects of a pilot’s job _______ be boring,and pilots often _______ work at inconvenient hours.
A.can; have to | B.may; have to |
C.have to; may | D.ought to; must |