I want to be very careful to talk only about ____ we've formally tested.
| A．which | B．that | C．what | D．whether |
She _________ his number in the phone book to make sure that she had got it right.
| A．looked for | B．picked out | C．picked up | D．looked up |
The meeting will begin at ten.So you have to be there _________ 9:50.
| A．about | B．by | C．after | D．until |
—Mum,I think I’m _________ to get back to school.
—Not really dear.You’d better stay at home for another day or two.
| A．so well | B．so good | C．well enough | D．good enough |
—Do you regret spending 500 dollars on the overcoat?
—No,I would have paid _________ if the shop owner had insisted.
| A．twice as much | B．twice as many | C．much as twice | D．many as twice |
_________ is known to everybody,the moon travels round the earth once every month.
| A．As | B．It | C．What | D．Which |