— Who is making so much noise in the garden?
— ______ the children.
| A．It is | B．They are | C．That is | D．There are |
.
It is required that each of the students chosen _________ good preparations ahead of time．
| A．has to make | B．will make | C．should make | D．must make |
.
My hard work _________．My cartoon came out in the form of a real book, beautifully printed．
| A．paid off | B．paid for | C．paid back | D．paid out |
.
．----- I’ve never found a better job．
----- _________．
| A．I don’t think so | B．Too bad | C．Congratulations | D．Don’t worry |
.
It requires _________ your willingness to do the job．It also requires a lot of mental effort．
| A．less than | B．more than | C．fewer than | D．nothing than |
.
When ___ help, one says “Thank you” while when _________ help, one asks “Can I help you?”
| A．offered; offered | B．offering; offered |
| C．offering; offering | D．offered; offering |