－How about the pollution in the countryside?
－Luckily, it’s not as serious as _______ in the big cities.
| A．that | B．it | C．one | D．those |
——_____ is this pen?
——It is red.
| A．What’s | B．What name |
| C．What’s color | D．What color |
—— How ___ Jack?
—— He is fine.
| A．is | B．are | C．am | D．/ |
——Please sit down.
——____________.
| A．Hello | B．Thank you |
| C．Sit down | D．I’m fine. |
——What color is the ruler?
——_________.
| A．It’s a ruler | B．It’s white |
| C．It’s a white | D．It white. |
——What’s this?
——______ a key.
| A．He’s | B．This’s |
| C．It’s | D．That’s |