When you are in trouble, you may _______ your teacher and classmates for help.
A. turn away B. turn around C．turn back D. turn to
The number of the people who can afford to buy their own house ______ more than 60%,but a number of houses _______.
A. are; hasn’t been built B. are; has built C. is; haven’t been built D. is; have built
I didn’t get a pay rise, but that wasn’t the right reason _______I left.
A. how B. at which C. when D. for which
He started to study ecology and decided to _______his whole life to the science.
A. ignore B. devote C. prefer D.lead
Recently our government policymakers are very _______about the rapidly rising food costs.
A. upset B. confused C. concerned D. conscious
Disappointingly, the new computer, ________ he loves a lot, breaks down frequently.
A. which B. what C. that D. one
