The Olympic Games is held ________.
A.each four years | B.every four years | C.each four year | D.every four year |
Oh, it’s so cool in the house. You _______ have turned on the air-conditioner, haven’t you?
A. should | B.might | C.must | D.can |
Fathers often feel __________ their duty to earn more money for their family.
A.that | B.it | C.one | D.what |
--- ________ the class done most of the work?
--- Yes, but the rest ___________ rather difficult.
A.Has, are | B.Has, is | C.Have, are | D.Have, is |
The problem lies __________ we are now giving him a fish, not teaching him to fish.
A.in that | B.on that | C.in which | D.on which |
We were lucky to have survived the train accident. _____, the first and last car were smashed.
A.On top of this | B.What was worse | C.As it was | D.So it was |