What a pity! I missed the concert _______ Jay Chou and Jolin Tsai performed songs in our city last week.
| A．which | B．at which | C．that | D．When |
—Thanks so much for everything. You have certainly made my stay very pleasant.
—__________.
| A．It's my duty |
| B．It's all right |
| C．It's my pleasure |
| D．It doesn't matter |
—__________ for the fire!
—It's OK. I'll be careful enough.
| A．Look out |
| B．Watch over |
| C．Put out |
| D．Light up |
I remembered __________ the door before I left the office, but forgot to turn off the lights.
| A．locking |
| B．to lock |
| C．having locked |
| D．to have locked |
The manager __________ the workers how to improve the program since 9 am.
| A．has told |
| B．is telling |
| C．has been telling |
| D．will have told |
In order to find the missing child, villagers __________ all they can over the past five hours.
| A．did |
| B．do |
| C．had done |
| D．have been doing |