________ my teacher couldn't understand was ________ fewer and fewer middle school students showed interest in her lessons.
| A．What; why | B．That; what |
| C．What; because | D．Why; that |
—Will the fine weather ________？
—I am afraid not. The weatherman says it's going to rain.
| A．stay up | B．keep up |
| C．come on | D．move on |
All over the world there seems ________people out of work nowadays.
| A．to have a great many | B．to be a great many |
| C．to have a great many of | D．to be a good many of |
________ is believed ________ more and more people would fly to the moon in the future.
| A．That; like | B．This; as |
| C．It; that | D．Man; when |
He didn't________ what I said because his mind was on something else.
| A．hold on | B．catch on |
| C．take in | D．get over |