—You look rather tired. _______stop to take a rest？
—All right. But I’ll have to work for a few more minutes.
| A．Why not | B．Why don’t |
| C．What about | D．How about |
A lot of supermarkets ________ in our city three years ago.
| A．built | B．build | C．are built | D．were built |
— In our city, people always see the blue sky this year. What do you think of it?
— I think trees we plant, air our city will have.
| A．the less; the cleaner | B．the most; the cleanest |
| C．the more; the cleaner | D．the least; the cleanest |
______ are these bright purple shirts in front of the window made of?
| A．Where | B．When | C．What | D．How |
She asked two persons the way to the bank, but of them could help her.
| A．both | B．neither | C．either | D．all |
Tom Green ________ his parents every night even while he was traveling around China.
| A．called | B．is calling |
| C．will call | D．calls |