Lessons can be learned to face the future, ________ history cannot be changed.
A.thoughB.asC.sinceD.unless
当前题号:1 | 题型:单项选择 | 难度:0.99
The naughty boy _____ quickly, otherwise he would have been caught by the angry headmaster.
A.had run awayB.ran away
C.should run awayD.were to run away
当前题号:2 | 题型:单项选择 | 难度:0.99
—Do you think George has passed the driving test?
—No. If so, he _____his car to our college yesterday.
A.would driveB.drove
C.would have drivenD.had driven
当前题号:3 | 题型:单项选择 | 难度:0.99
— If I ______ my dog run out in the street, it wouldn't have been injured by the car.
— Don't blame yourself any more. Owning a pet is a tough job.
A.hadn't letB.didn't letC.wouldn't letD.wouldn't have let
当前题号:4 | 题型:单项选择 | 难度:0.99
—I heard they went skiing in the mountains last winter.
—It    true because there was little snow there.
A.may be notB.won’t beC.couldn’t beD.mustn’t be
当前题号:5 | 题型:单项选择 | 难度:0.99
. He dressed himself quickly and ___________ his schoolbag, went to school.
A.carriedB.to carryC.carryingD.Carries
当前题号:6 | 题型:单项选择 | 难度:0.99
I didn’t hear the phone. I ___ asleep.
A.must beB.must have been
C.should beD.should have been
当前题号:7 | 题型:单项选择 | 难度:0.99
From his tired face, I can tell he _______ in the queue for a long time.
A.is waitingB.will waitC.will be waitingD.has been waiting
当前题号:8 | 题型:单项选择 | 难度:0.99
The company had about 30 computers but only one­third  used regularly.Now we have 60 working all day long.
A.isB.are
C.wasD.were
当前题号:9 | 题型:单项选择 | 难度:0.99
Tom sounds very much ______ in the job, but I’m not sure whether he can manage it.
A.interestedB.interestingC.interestedlyD.interestingly
当前题号:10 | 题型:单项选择 | 难度:0.99