——I’m sorry , but there’s no smoking on this flight ．
——Oh, I _______that ．Sorry , I won’t again ．
| A．don’t know | B．didn’t know |
| C．won’t know | D．haven’t known |
相关试题
The anti-Japanese War in 1937.
| A．came across | B．came out | C．came down | D． came about |
Before going camping, we must discuss every thing-where to go, what to bring, when to start .
| A．such as | B．for instance | C．and so on | D．take examples |
The world will be different and we will have to be prepared to the change.
| A．adapt to | B．adopt to | C．apply to | D．devote to |
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