___the clouds, you would find the airplane in the sky easily
| A．Had it not been for | B．If it were not | C．If it had not been for | D．Were it not for |
----- Can I help you?
----- I’d like to buy a present for my father’s birthday, ____ at a proper price, but of great value.
| A．which | B．that | C．one | D．any one |
He was very busy, and ______ he didn’t go to the party that night.
| A．however | B．therefore | C．otherwise | D．anyhow |
---Thank you so much for the wonderful party, Chris.
----You’re quite welcome, John. ____.We’ve been looking forward to seeing you.
| A．Just stay a little longer, please | B．It’s just of my pleasure. |
| C．Thank you for coming | D．I don’t think you had a good time |
---Haven’t you met each other at ____ party?
---Yes, but I can’t remember whether it is____ Christmas when we were in college.
| A．a ; the | B．the; a | C．a; a | D．a; / |
I don’t smoke now, but I ____for almost ten years.
| A．ever smoked | B．have ever smoked |
| C．had ever smoked | D．was ever smoking |