Look before you leap! You have to ______the costs of the new system against the benefits it will bring.
A. weigh B. match C. defend D. Fight
If you have a job, ________ yourself to it and finally you’ll succeed.
A. do devote B. don’t devote C. devoting D. not devoting
_________, so he is afraid of dogs .
A. Having been bitten twice B. Bitten twice
C. After he has been bitten twice D .He has been bitten twice
As is widely acknowledged, playing outside helps children learn through curiosity, which , _ __, promotes creativity.
A．in brief B．in turn C．in conclusion D．in return
--Life ____ be very hard for people living in the north of Canada as it is very
cold there in winter.
—Yes, the weather there _____ be as low as 60℃ below zero.
A.must; can B．shall; must C．will; should D．has to; can
— Which of the twin brothers is easier to get on with?
— _____ younger one. He is ____ most humorous man.
A．A; a B．A; the C．The; a D．The; /
