Do you know since when it is ________ you have been interested in poetry?
| A．when | B．until | C．how | D．that |
Not until some students failed in the exam _____ how much time they had wasted.
| A．didn’t they realize | B．did they realize |
| C．they didn’t realize | D．they realize |
Wherever she is sad, her parents can always______.
A．bring her up |
B．cheer her up |
| C．give her up | D．come on |
. Danny left word with my mother _____ he would call again in the afternoon.
| A．who | B．that | C．as | D．which |
I’d try even if I may fail ______sit there worrying in time of trouble.
| A．rather than | B．other than | C．more than | D．less than |
---- Do you mind if I smoke?
----________.
| A．Why not? | B．Yes, help yourself. |
| C．Go ahead. | D．Yes, but you’d better not. |