For a long time they walked without saying __ word. Jim was the first to break __ silence.
A. the, a B, a, the C. a, / D. the, /
—I was worried about my math，but Mr．Brown gave me an A. —______________.
A．Don’t worry about it．
B．Congratulations! That’s a difficult course．
C．Mr．Brown is very good．
D．Good luck to you!
Mother was busy washing dishes ________________ Father was watching TV．
| A．until | B．if | C．since | D．while |
Shanghai is the first city in the world _____________ a high-speed maglev train，from the city to Pudong Airport．
| A．building | B．having built | C．to have built | D．built |
—Is Tom still smoking?
—No．By next Saturday he _____________ for a whole month without smoking a single cigarette.
| A．will go | B．will have gone | C．goes | D．has been going |
While reading an interesting story book in my room，______________.
| A．the light suddenly went out |
| B．the doorbell rang |
| C．someone was shouting outside |
| D．I heard someone shouting outside |