When first __________to the market ,these products enjoyed great success .
| A．introducing | B．introduced | C．to introduce | D．being introduced |
—We enjoyed the flowers in the park，and had ________ great fun yesterday.
—Great.But it’s ________ great pity that I didn’t join you.
| A．/；/ | B．a；/ | C．/；a | D．a；a |
Hot water is converted to electricity by a turbine. The underlined word can be replaced by ______.
A. conveyedB controlled.C. chosenD. changed
The noise coming from upstairs are driving me mad.
| A．cognitive | B．excessive |
| C．irritating | D．exposing |
We should take effective measures to the infectious disease.
| A．work out | B．stamp out | C．turn out | D．carry out |
Since Tom downloaded a virus into his computer, he cannot open the file now.
| A．constantly | B．accidentally |
| C．deadly | D．eventually |