.They ______ be at home. You see, the door is locked from the outside.
| A．can’t | B．may | C． must | D． mustn’t |
-----I like coffee with nothing in it. What about you?
-----I prefer coffee _____ sugar.
| A．to | B．for | C．with | D．than |
----When did ______ accident happen?
-----Let me see. It was on _____ very hot afternoon in August.
| A．the; the | B．an;/ | C．the; a | D．an; the |
Whocanthinkofasituation__________thisidiomcanbeused?
| A．which | B．that | C．where | D．inthat |
You may choose one from _________ was left.
| A．that | B．all | C．those which | D．what |
It isn't decided yet _______ we will attend the meeting.
| A．if | B．why | C．that | D．whether |