A: Did you solve _ problem you were discussing at the meeting?
B: No, we didn't. It was _ difficult problem we had never met.
A. the, the B. a, a C. the, a
— What a beautiful dress！Can you tell me _______?
— Just the day before yesterday.
| A．when do you buy it | B．when you buy it | C．when you bought it | D．when did you buy it |
I’ve become good friends with several of the students in my school _______ I met in the English speech competition last year.
| A．who | B．where | C．when | D．which |
— Shall we go out for a walk?
— Sorry. This is not the right _______ to invite me. I am too tired to walk.
| A．moment | B．plan | C．place | D．way |
There was a loud cry from the backstage immediately after the concert ended, _______?
| A．wasn’t there | B．was there | C．didn’t it | D．did it |
— Someone wants you on the phone.
— _______ nobody knows I am here.
| A．Besides | B．And | C．But | D．So |