——Jim is addicted to novels recently.
——Yes, that might _____ why he did so badly in the last test.
| A．answer for | B．apply for | C．account for | D．call for |
He is very old,____ he still works very hard.
| A．but | B．if | C．when | D．as |
---You are so lucky.
---What do you mean ____that?
| A．for | B．in | C．of | D．by |
Let's walk over ___the shop on the other side of the street.
| A．in | B．to | C．under | D．by |
_____most students, she was always well prepared and never came to class late.
| A．Like | B．As | C．For | D．To |
The doctor will be free ____.
| A．10 minutes later | B．after ten minutes |
| C．in ten minutes | D．10 minutes after |