People in industrial countries take in as they actually need every day.
| A．twice as much protein | B．protein as much twice |
| C．twice protein as much | D．protein as twice as much |
Remind him ______ the window and door when he leaves.
| A．of closing | B．closing | C．to close | D．close |
We arranged to meet at the school gate at 8:00, but she didn’t _____
| A．turn down | B．turn off | C．turn over | D．turn up |
When a question ________at the meeting, no one could answer it.
| A．rose | B．raised | C．came | D．arose |
The River Nile _______ flood large areas, but now the water of it _______ produce electricity.
| A．used to, is used to | B．used to, used to | C．is used to, is used to | D．is used, to used to |
. I shall never forget the day ____ we first visited the beautiful school.
| A．where | B．when | C．in which | D．which |