— Susan, would you like to go hiking with us this afternoon?— I'd love to, but I study for a test.A. may B. have to C. can
– Why do you _______ the radio?– I’m afraid of waking up the baby.A. turn up B. turn on C. turn down
He spent little time on study, so it didn’t surprise me that he _______ the exam.A. took B. passed C. failed
Many kinds of animals are ______. We must do something to save them.A. on holiday B. in danger C. on show
Some people never know what they need ______ they lose it.A. until B. as C. after
After the controlling of the transportation in Xiamen, there will be ______ cars on the road.A. fewer B. less C. more