—Dad, when shall we go to visit my grandpa?
—Grandpa is very busy at present．We'll go to see him whenever __________.
A. he is convenient B. he will be convenient
C. it is convenient to him D. it will be convenient to him
Do you think the idea he stuck ____correct?
A. to proved B. to prove C. proved D. to proving
The hungry man eats his food _______he hadn ' t eaten for a week.
A. as if B. even though C. such as D. like as
We must ________ our task, however hard it is.
A. carry about B. carry off C. carry on D. carry away.
________ the same mistake again made his parents very angry.
A．His being made B．He had made C．He had making D．His making
The police are________to conclude that the cause of fire had been a cigarette end.
A.probable B.possible C.maybe D.likely
