The two friends ______on the Internet for three hours, and they would go on till the next morning.
| A．have been chatting | B．had been chatting |
| C．were chatting | D．had chatted |
If you have a job, yourself to it and you’ll succeed.
| A．don’t devote | B．do devote | C．devoting | D．not devote |
That was the first time I _______ there and I was impressed by the friendly people very much.
| A．go | B．was going | C．had gone | D．have gone |
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 |
—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 |
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 |
This coastal area a national wildlife reserve last year.
| A．names | B．named | C．is named | D．was named |
．-----Tommy is planning to buy a car.
----I know .By next month, he______ enough for a used one.
| A． saves | B．saved | C．will save | D．will have saved |
I'll go to the library as soon as I finish what I .
| A．was doing | B．am doing | C．have done | D．had been doing |
Tom in the library every night over the last three months.
| A．works | B．worked |
| C．have been working | D．had been working |
—Bob has gone to California.
—Oh, can you tell me when he ?
| A．has left | B．left | C．is leaving | D．would leave |
You ____ television. Why not do something more active?
| A． always watch | B． are always watching |
| C． have always watched | D． have always been watching |
—Waiter, what about my coffee? I______ for over 10 minutes.
—Sorry, sir. It will just be a moment
| A．am waiting | B．was waiting | C．had waited | D．have been waiting |
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