—What color is _______ orange?
—It's____ orange.
| A．an, an | B．the, the | C．an / | D．a, / |
There are ________ books in the National Library.
| A．twenty millions | B．twenty millions of |
| C．twenty million | D．twenty million of |
Listen! Someone_____ singing in the next room.
| A．is | B．are | C．does | D．do |
How about_________out for a walk, mum?
| A．go | B．going | C．to go | D．goes |
I don’t think he tried his best to learn English, ___________？
| A．did he | B．do I |
| C．didn’t he | D．don’t I |
He spends as much time as he can ___________ English every day.
| A．to practise speaking | B．to practise to speak |
| C．practise to speak | D．practising speaking |