5．
从方框中选择最佳选项完成对话, 有两项多余。A. Don't worry.
B. Let's look for it together.
C. What's the matter?
D. Whose backpack is this? E. It can't be mine.
F. You are welcome. G. I think I might leave it in the reading room. |
A: Anna, you look worried.
B: I can't find my backpack anywhere. Where can it be?
A: Let's see where it might be.
B: But it isn't there.
A: What color is your backpack?
B: It's black and white.
A: Oh, look! Is this one yours?
B: No. Mine is newer than this one.
