—What does the sign over there read?―“No person ______ smoke or carry a lighted cigarette，cigar or pipe in this area．”
| A．will | B．may | C．shall | D．must |
_________along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me.
| A．Driving | B．When I was driving | C．I was driving | D．Having driven |
After＿＿＿seemed a hopeless wait, four coal-miners trapped in the mine for 125 hours were finally rescued in Heilongjiang Province．
| A．when | B．that | C．it | D．what |
We _______ the difficulty together, but why didn’t you tell me?
| A．should face | B．might face | C．could have faced | D．may have faced |
The real secret to successful learning lies in students＿＿＿＿an interest in what they are doing.
| A．to take | B．taking | C．taken | D．having taken |
— So nice to see you, Lucy! I never thought you visit us today.
— Sorry, I forgot to tell you I was coming. I hope you don’t mind me _____.
| A．calling in | B．pulling in | C．breaking in | D．dropping in |