While watching television, _______________________.
| A．the doorbell rang | B．we heard the doorbell ring |
| C．there was someone knocking at the door | D．we heard the doorbell rung |
--- What is the date today?
--- It's _________.
| A．Thursday | B．June the sixteenth | C．the best day | D．June fifteen |
She knows a lot about China as she has been to China ________.
| A．for the forth time | B．four times | C．a fourth time | D．for four times |
--- May I help you, sir?
--- Yes, I bought the TV the day before yesterday, but it ______.
| A．didn’t work | B．doesn’t work | C．won’t work | D．can’t work |
______ the bus until it ______..
| A．Get off, stops | B．Get off, will stop | C．Don’t get off, stops | D．Don’t get off, will stop |
The 70-year-old man ______ exercises in the morning.
| A．takes | B．are taking | C．took | D．will take |