—I called you at 4∶00 yesterday afternoon. But there was no answer. Wherewere you?—I in the supermarket.A、am shoppingB、do shoppingC、was shopping
.—Why not _______us and have a good time at the party? ---I would love to. ________ I have a lot of homework to do.
—The old man is ill. He ________ to the hospital at once. --Don’t worry. A doctor _________to come already.
---___________ will the weather be like tomorrow? --There will be a thunder storm. I don’t know _____ to do when the storm comes.
--_________ can cormorants stay under the water? --_________ up to two minutes.
--Have you tried to stop him __________eating too much junk food? --Yes. But he still keeps ___________ eating a lot of fried chicken wings.