I was about to leave_______ something happened, which attracted my attention.
| A．unless | B．until | C．when | D．while |
— What made you so upset?
— ______ the exam.
| A．Failing to pass | B．To fail passing |
| C．Failing passing | D．To fail to pass |
Lucy switched on the engine and the car _______ in a cloud of dust.
| A．set out | B．set about | C．set off | D．set down |
He likes going snowboarding on that hill _______ snow all the year round.
| A．covering with | B．covered with |
| C．covering | D．cover with |
_______, or he’ll be more angry.
| A．To tell you the truth | B．Telling him the truth |
| C．Told the truth | D．Tell him the truth |
The first step is finished. What do you suggest _______ next?
| A．should do | B．be done | C．to do | D．doing |