He liked to go to dances and parties, he could have a good time just sitting and watching.
A.where | B.when | C.which | D.that |
If human beings had been a bit less greedy and cruel, more birds and animals _______dying out.
A.ought to avoid | B.could have been avoided |
C.should have avoided | D.might have avoided |
With a lot of difficult problems____________, the manager felt worried all the time.
A.to settle | B.settling |
C.settled | D.being settled |
--Was Tom there when you arrived?
--Yes, but he___________ home soon afterwards.
A.had gone | B.has gone | C.is | D.went |
—Look at these tracks. It __________ be a wolf.
—It needn't be. It ___________ be a fox.
A.must; could | B.may; might |
C.need; must | D.could; need |
Travelers_______________ that they should bring their ID cards with them.
A.have reminded | B.are reminded |
C.were reminding | D.had been reminded |