________ you kept your mobile phone on in such an important exam? It’s against the school regulation．
| A．How dare | B．How come | C．How about | D．What if |
He arrived here at noon, in the day, and he went out and came back in the day.
| A．late; late | B．late; later |
| C．later; late | D．later; later |
You are really very kind. I’ll never forget the you have done to me.
| A．favour | B．deed |
| C．help | D．good |
A computer is so useful a machine ________ we can use everywhere.
| A．that | B．which | C．as | D．what |
---Spacecraft “Discovery” has failed in the course of launch.
----_______? They have been preparing for the test.
| A．How come | B．When | C．How | D．Why not |
I can hardly imagine so pretty girl like you ________ boxing.
| A．like | B．to like | C．liking | D．to have liked |