I was on the highway when this car went past followed by a police car. They ______ at least 150 km an hour.
| A．should have been doing | B．must have been doing |
| C．could have done | D．would have done |
If everything goes well, I ______ home at this time tomorrow morning.
| A．will drive | B．am going to drive |
| C．will be driving | D．am to drive |
On top of the mountain ______, which was built 2,000 years ago.
| A．a tower stands | B．stands a tower |
| C．standing a tower | D．does a tower stand |
______ to get a ticket for the concert Eason's Life, George has been standing in a queue for 3 hours.
| A．Determining | B．To determine | C．Being determined | D．Determined |
With the development of high technology, more and more new things ______ in the past years.
| A．discovered | B．have discovered |
| C．had been discovered | D．have been discovered |
That e-book is no larger than an ordinary book with a screen ______ you can read original book and film reviews.
| A．in which | B．of which | C．that | D．where |