---Do you know when he will come back tomorrow?
---Sorry, I don’t know. When he back, I’ll tell you.
| A．comes | B．will come | C．come | D．may come |
______the problem clearly, Mary has to look for lots of information.
| A．To explain | B．Explaining |
| C．Explain | D．Explained |
Thank you for your______,otherwise I couldn’t finish the work on time.
| A．kind | B．kindly | C．kindness | D．kinds |
—Would you mind opening the door?
— ______ .
| A．All right. |
| B．Yes, of course |
| C．Not at all. I’ll do it right away |
| D．It doesn’t matter |
---Do you still remember the first day we met at school?
--- Very clear _____ it was yesterday.
| A．as long as | B．as if |
| C．as soon as | D．as a result |
Would you be kind enough to _________ your music?The baby is sleeping.
| A．turn down | B．turn up |
| C．turn on | D．turn off |