________from heart trouble for years, Professor White has to take some medicine with him wherever he goes.
| A．Suffered | B．To suffer | C．Having suffered | D．Being suffered |
— Hi, what did our monitor say just now?
— Every boy and every girl as well as teachers who are to visit Water Cube ______ asked to be at school gate before 6∶30 tomorrow morning.
| A．is | B．were | C．are | D．was |
You’d better spend your time just on the things you find ______.
| A．worth doing them | B．worth being done |
| C．worthy of doing them | D．worthy of being done |
In communication, a smile is usually ______ strong sign of ______ friendly and open attitude.
| A．the; / | B．a; an | C．a; a | D．the; an |
It is demanded that the plan _____ out as soon as possible.
| A．must be carried | B．is to carry out | C．carried | D．be carried |
—Who should be responsible for the accident?
—The boss, not the workers. They just carried out the order.
| A．as telling | B．as are told | C．as told | D．as they told |