She has set a new record, that is, the sales of her latest book______ 50 million.
| A．are reaching | B．have reached |
| C．are reach | D．had reached |
Going on a trip into_____ space must be quite __ exciting experience.
| A．/; the | B．/; an | C．the; an | D．the; the |
. The storm left,_______ a lot of damage to this area.
| A．caused | B．to have caused | C．having caused | D．to cause |
It was in the small house _____ was built with stones by his father ____ he spent his childhood.
| A．which; that | B．where; that | C．which; which | D．that; which |
. With the development of science, more new technology____ to the field of IT.
| A．is being introduced | B．has introduced |
| C．is introducing | D．was introduced |
16. I was speaking to Ann on the phone when suddenly we were_____
| A．cut in | B．cut up | C．cut down | D．cut off |