When he came back from abroad，our country was ________with Japan.
| A．at a war |
| B．at war |
| C．at the war |
| D．on war |
I ________ while reading the English textbook. Luckily, my roommate woke me up in time!
| A．had fallen asleep | B．have fallen asleep |
| C．fell asleep | D．fall asleep |
Every year, the coal workers their lungs X-rayed to ensure their health.
| A．are having | B．have had | C． have | D．had had |
We ________ to go skiing tomorrow，but there’s no snow，so we’ll just stay home instead。
| A．are going | B．were going | C．will go | D．would go |
—Has Sam finished his homework today?
—I have no idea. He ________ it this morning.
| A．did | B．has done | C．was doing | D．had done |
This time next week I’ll be on vacation .Probably I ________ on the beach.
| A．am lying | B．have lain | C．will have lain | D．will be lying |