—Tom, you look tired this morning. What’s wrong?
—I was so busy that I didn’t go to bed________12 o’clock last night.
| A．until | B．when | C．though | D．unless |
He came to see you _____ the evening of May 10th.
| A．in | B．at | C．on | D．for |
I’m afraid I gave you a lot of trouble ________ my stay here.
| A．in | B．for | C．during | D．on |
The singing group will have two performances ______ October.
| A．after | B．since | C．/ | D．for |
The supermarket is open ______ midnight.
| A．at | B．on | C．till | D．/ |
She didn’t go to work ______ that morning. She slept ______ noon.
| A．/…till | B．on…till | C．at…at | D．/…at |