Listen! Someone __________ at the door. I'll go to see who it is.
| A．has knocked |
| B．is knocking |
| C．are knocking |
| D．knocks |
—Mom，I can't see any point in working hard at all the subjects at school.
—Come on，dear. Years of hard work will surely ________ in the future.
| A．make sure | B．pay off |
| C．pay for | D．pay back |
I'll type your report if you are willing to look after my baby ________.
| A．in time | B．in exchange | C．in turn | D．in place |
—Do remember to see a doctor tomorrow.
— ________.
| A．Got it | B．Heard it | C．Made it | D．Taken it |
Mr. Smith __________ the accident，but his wife died and he __________ her by five years.
| A．survived from；survived | B．survived of；lived |
| C．survived；survived | D．survived；lived |
It's said that there're millions of camels in India and ________ of them is still increasing.
| A．the number | B．the amount |
| C．the quantity | D．a number |