Great changes _______ in this city over the past five years.
A. took place B. have taken place C. were taken place D. have been taken place
If you see Jack please give my __________ to him for not having written to him.
A. apology B. excuse C. message D. theory
Do you think the plan _________ out as soon as possible?
A. should carry B. ought to be carried
C. ought to have carried D. ought to have been carried
— Why do you eat so little?
— I’m _______ a diet to reduce some weight.
A. in B. on C. with D. under
Some policemen should be sent to _______ them _______ the animals.
A. prevent; to kill B. stop; killing
C. keep; to kill D. keep; killing
After going into the concert hall, Tom _________ a friend and went over to greet her.
A. searched B. stared C. spotted D. admired
