As we all know, eating too much fat can ______ heart disease and cause high blood pressure.
| A．add to | B．attend to | C．contribute to | D．apply to |
You park here! It’s an emergency exit.
| A．wouldn’t | B．needn’t | C．couldn’t | D．mustn’t |
The palace caught fire three times in the last century, and little of the original building _______now.
| A．remains | B．is remained | C．is remaining | D．has been remained |
If I had known about this computer program, a huge amount of time and energy .
| A．would have been saved | B．had been saved |
| C．will be saved | D．was saved |
— Her father is very rich.
—________ She wouldn’t accept his help even if it were offered.
| A．What for? | B．So what? | C．No doubt. | D．No wonder. |
The experiment shows that proper amounts of exercise, if regularly, can improve our health.
| A．being carried out | B．carrying out | C．carried out | D．to carry out |