He was about halfway through his meal ________ a familiar voice came to his ears.
| A．why | B．where | C．when | D．while |
Although Tom agreed with her on most points, here was onehe was unwilling to give in.
| A．on which | B．in which | C．to which | D．with which |
—How wide is the Yellow River?
—Thatfrom where to where.
| A．depends | B．changes | C．refers | D．lies |
It is your own faultyou are so tired. You oughtn’t to have stayed up so late.
| A．when | B．how | C．where | D．why |
As teachers we should concern with what is said, not what we think.
| A．have to be said | B．must say | C．ought to be said | D．need to say |
To pay to see that movie will be foolishyou can see it on TV for nothing.
| A．where | B．when | C．however | D．that |