The question that puzzled them is ____ they can get rid of the air pollution in the area.
| A．how is it that | B．that how | C．what is it | D．how it is that |
If you _______ with your classmates, you will surely get the same work done far
better.
| A. team up |
B. catch up |
C. get along |
D. put up |
I have no impression _______ he went home perhaps by bike.
| A. when |
B. that |
C.how |
D. why |
It _______to John that he had left the door unlocked.
| A.happened |
B. occurred |
C. struck |
D. took place |
_______ Obama was elected president of the USA is a big success for the blacks
in America.
|
It is reported that large amounts of locusts(蝗虫) _____ in their activity in the north now.
| A．is | B．are | C．was | D．were |