It’s too cold outside today. You’d better ____ your jacket.
| A．put on | B．put up | C．put off | D．put out |
While I _____________, someone ___________at the door.
| A．did my homework; knocked |
| B．do my homework; knocks |
| C．was doing my homework; knocked |
| D．was doing my homework; knocks |
They ____________ in the river when it __________ to rain.
| A．were swimming; began |
| B．swam; was beginning |
| C．swam; began |
| D．were swimming; was beginning |
Please knock at the door ________ you come into the room.
| A．before | B．after | C．until | D．while |
– Where is Jenny now?
-- She _____________ in the garden.
| A．works | B．is working |
| C．work | D．worked |
– Daming, where are you going?
-- Don’t worry, mum. I _______________ in ten minutes.
| A．come back | B．have come back |
| C．will come back | D．coming back |