_____ is known to everybody that the moon travels round the earth.
| A．It | B．As | C．When | D．Where |
—Do you still go jogging every morning?
—Yes, I can’t think of a _______________ way to start a day.
| A．better | B．best | C．worse | D．worst |
—Do you think we are going the right way to the Forbidden City?
—Sorry, I’m not sure．But it _______ be．
| A．might | B．will | C．must | D．can |
The reason for his success is ______ he worked very hard.
| A．why | B．that | C．whether | D．how |
Word came _______ the students would put off the outing until next week, when they wouldn’t be busy.
| A．that | B．when | C．which | D．whether |
He ______ at once when I promised to help him.
| A．cheered up | B．gave up | C．broke up | D．turned up |