——I think the book is as interesting as it is instructive．
—— It could never be____．It is well worth reading．
| A．as true | B．true | C．the truest | D．truer |
---It’s a long time since I saw Marry.
--- _________ her this afternoon?
| A．Why not to | B．Why not visit her |
| C．Why not visiting | D．Why don’t visit |
—Why are you crying? Today is your birthday!
—_______. I am so excited with so many friends surrounding me.
| A．None of your business | B．Don’t mention it |
| C．Just can’t help it | D．That’s all right |
--- Haven’t seen you for ages! Where have you been ?
--- I went to Ningxia and _______ there for one year, teaching as a volunteer.
| A．stayed | B．stay |
| C．had stayed | D．am staying |
When _________ our national flag _______, we feel our hearts full of pride and strength.
| A．watch; rising | B．watching ; raising |
| C．watching ; being raised | D．watch; to rise |
Since the time humankind started gardening, we __ to make our environment more beautiful.
| A．try | B．have been trying |
| C．are trying | D．will try |