.－Would you mind my opening the window for some fresh air?
－ _______
| A．Why not? | B．Yes, help yourself. |
| C．Go ahead, please. | D．Yes, but you’d better not. |
We all think that the plan you suggest _____ the work is very practical．
| A．completing | B．completed | C．to complete | D．should complete |
The old couple have been married for 40 years and never once _____ with each other．
| A．they had quarreled | B．they have quarreled |
| C．have they quarreled | D．had they quarreled |
Not far from the club, there was a garden, _____ owner seated in it, playing chess with a friend．
| A．whose | B．its | C．his | D．which |
---Why didn’t you try your best to get on the bus?
---I tried to, but _____ I could, it started moving．
| A．until | B．when | C．before | D．after |
----I hope you enjoyed the film last night．
----How on earth do you know I went to a film? I ________you．
| A．won’t tell | B．didn’t tell | C．haven’t told | D．hadn’t told |