_______the thick clouds, you would find the kite in the sky easily.
| A．Had it not been for | B．If it were not |
| C．If it had not been for | D．Were it not for |
You were _______ to take your shoes off when you entered the school lab, but you didn’t.
| A．invited | B．supposed | C．selected | D．approved |
--- Would you please give me a hand and take the bookcase upstairs?
--- _______.
| A．With pleasure | B．My pleasure |
| C．Of course I do | D．Yes, that’s all right |
The flowers were so lovely that theyin no time.
| A．sold out | B．had been sold out | C．were sold out | D．would sell out |
the day went on, the weather got worse.
| A．With | B．When | C．While | D．As |
Only when I left my parents for Americahow much I loved them.
| A．I realized | B．I had realized | C．had I realizd | D．did I realize |