Jack felt nervous when he found the physics problems ____ to work out.
| A．easy enough | B．too easy |
| C．too difficult | D．difficult enough |
一What are you doing under the desk？
一I'm looking for the pen I bought yesterday．
| A．who | B．that | C．What | D．where |
一What does your sister usually do on Saturday mornings?
一She often practices English for half an hour．
| A．to speak | B．speaks | C．speaking | D．speak |
—Wow~how big the breakfast is!
— and enjoy it．
| A．Sitting down | B．To sit down |
| C．Sit down | D．Sat down |
一1want to get some bread from the supermarket before it ．
一My watch says 8:15 pm.So,We have about 15 minutes left to get there．
| A．closes | B．will close | C．close | D．closed |
一I like the smell in the air—newly-cut grass and sweet flowers．
一 .It smells so nice．
| A．So I do | B．So do I | C．So am I | D．So I am |