Emergency line operators must always ________ calm and make sure that they get all the information they need to send help.
A．grow B．appear C．become D．stay
Happy birthday, Alice！So you have ________ twenty－one already!
A．become B．turned C．grown D．passed
Some people eat with their eyes.They prefer to order what ________ nice.
A．looks B．smells C．feels D．tastes
It was already past midnight and only three young men ________ in the tea house.
A．left B．remained C．delayed D．deserted
On hearing the news of the accident in the coal mine，she ________ pale.
A．got B．changed C．went D．appeared
The effect of the medicine on this kind of disease remains ________.
A．seen B．to be seen C．seeing D．to see
