When I tried to find _________that prevented so many people from taking part in the program, it seemed to me that there were two main reasons.
| A．why it did | B．that it did | C．what it was | D．why it was |
—Linda, you couldn't have chosen a much better present for me.
—________
| A．Oh, it can't be helped. |
| B．I'm glad you like it so much. |
| C．That's all right. |
| D．It's nothing, isn't it? |
—Hi, Mum. I got promoted for my wonderful performance in my work.
—________
| A．Congratulations! | B．Best wishes. |
| C．Good luck. | D．Don't mention it. |
—Dad, can we go to the shop? I want to buy some sweets.
—________. Can't you see I'm busy at the moment?
| A．Take it easy | B．No problem |
| C．Forget it | D．Don't mention it |
—It's been a wonderful evening. That's very kind of you.
—________.
| A．It's my pleasure | B．With pleasure |
| C．Go ahead | D．Not really |
—I guess I must leave now. See you tomorrow.
—________！ I have some important information for you.
| A．Hang on | B．Never mind |
| C．All right | D．Take care |