Being blind is something ________most people can’t imagine.
| A．who | B．what |
| C．that | D．whom |
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 |
She was surprised to find the fridge empty; the child _____ everything!
| A．had been eating | B．had eaten |
| C．have eaten | D．have been eating |