----How often does he write e-mails to his friend? ----____________.
| A．Once a month | B．In a week |
| C．For ten minutes | D．Last Monday. |
Maybe you should __________.
| A．call on her | B．call him at | C．call him up | D．call up her |
Our physics teacher told us light __________ faster than sound last term.
| A．travels | B．travel | C．travelled | D．travelling |
Xiao Li was supposed __________ her homework before nine o’clock. But she couldn’t.
| A．to finish | B．to finishing | C．finish | D．finishing |
Where was Daly __________ Linda was looking for him?
| A．that | B．while | C．at | D．where |
I __________ the CDs to you if I have time tomorrow.
| A．will return | B．returned | C．have returned | D．return |