12．－Nice to see you back home，Bill．How long         you         （stay）in China?

－You           （always leave）things behind．

11．－Oh，dear．I forgot the air tickets．

－Oh yes，I            （enjoy）the sunshine in Hawaii next Friday afternoon while you’re all working !

10．－Have you thought about your day off next week?

9．They said on the news this morning that ten people            （kill）in the accident.

8．Sometimes，notice          （translate）into different languages for the benefit of tourists．

－In the 15th century, I think―in China．

7．－When           the toothbrush            （invent）?

－Not in the afternoon，I’m afraid          （work）then．