—Why don’t you wear the black jacket? — .
| A．That’s a good idea. | B．How about you? | C．Really? | D．Sorry to hear that. |
Scientists are working hard to make _______ possible for people to live on Mars in the future.
| A．it | B．that | C．this | D．one |
After you see the pictures, you will realize ______ danger the wildlife faces.
| A．how many | B．how often | C．how much | D．how long |
--- Middle school students hardly know anything about shopping online, ____ they?
--- ________. It’s very popular with teenagers.
| A．do; No | B．do; Yes | C．don’t; No | D．don’t; Yes |
In the UK, a woman usually doesn’t like to be asked _________.
| A．if she has been married or not | B．what is her age |
| C．how much she weighs | D．where she comes from |
--- Look! That teacher is explaining something to her students again and again.
--- _________ teacher she is.
| A．How patient | B．What a patient | C．How stubborn | D．What stubborn |