---You haven’t said one word about the design, Joe. What’s your idea?
---Sorry. I________about something else.

A．thought	B．am thinking
C．was thinking	D．had thought

The professor gave orders to the students that the rest ______ before 5:30.

A．be finished

B．will be finished

C．will finish

D．finish

We __________3,000 English words by the end of last year.

A．have learned

B．had learned

C．learned

D．learn

.
Water as well as other resources ______ all over the world every day.

A．is wasted

B．are wasted

C．waste

D．wastes

—Have you seen your aunt lately?
—Yes, in fact I saw her yesterday．I_________ her for several months．

A．haven’t seen

B．didn’t see

C．hadn’t seen

D．don’t see

--- Bob, where are you working now?
--- I used to work in a small company, but I ________ a job in some bigger companies.

A．have sought

B．had sought

C．was seeking

D．am seeking

Great changes _________ in China in the last two decades.

A．have taken place	B．took place
C．have been taken place	D．are taking place

.
Tombe told me that the can___________ to dry out the leftover food.

A．is heating

B．heat

C．heated

D．was heate

.
Within a moment, its body _______ swiftly by the killer down into the depths of the sea.

A．was dragging

B．is dragging

C．was dragged

D．dragged

.
After getting my visa I was very excited because I __________  of this day for so long.
A, have dreamed    B. dream      C. had dreamed            D. am dreaming    .