—What time will Mr Brown be back to China?
—Sorry. I don’t know ______.
| A．when did he go abroad | B．why he is going abroad |
| C．how soon will he be back | D．how long he is going to be there |
—There _______a concert this evening. —Yeah, Exciting news.
| A．are going to be | B．is going to be |
| C．is going to have | D．will have |
—The little dog saved his owner in the fire. —Oh, ____________it was!
| A．How brave dog | B．What brave dog |
| C．How a brave dog | D．What a brave dog |
—What a beautiful city Quzhou is!
—Yes. Quzhou ________ a lot in the last few years.
| A．is changing | B．has changed |
| C．changing | D．changed |
The USA is a big country _______at any time.
| A．to visit it | B．to visit |
| C．visiting | D．for visiting |
—The Hang-chang high-speed railway（高铁） ____ in 2015.
—Really? That’s news to me.
| A．is built | B．builds |
| C．will build | D．will be built |