If he is once ______ laughing, he finds ______ difficult to stop.
| A．set about; that | B．set out; this | C．set force; which | D．set off; it |
I have learned that clothes ______ online are of poor quality.
| A．bought | B．buying | C．to buy | D．having bought |
On Christmas Eve, children are eager to know _______Father Christmas comes and puts presents into their stockings．
| A．that | B．what | C．where | D．how |
There is no need to leave a tip in Canada. Service ________ in the bill.
| A．included | B．is included | C．includes | D．was included |
——Why did you not come to the party?
——I ______ it, but my car broke down on the way.
| A．attended | B．had attended | C．would attend | D．would have attended |
The teacher is very much ____ letting students use i-phones in the class.
| A．against | B．to | C．over | D．about |