He has left out the most important reason why he last night .
| A．stayed up | B．put up | C．picked up | D．kept up |
We won’t give up ______________we should fail ten times.
| A．even if | B．since | C．whether | D．until |
___________, Mother will wait for him to have dinner together.
| A．However late is he | B．However he is late |
| C．However is he late | D．However late he is |
After the war, a new school building was put up ___________there had once been a theatre.
| A．that | B．where | C．which | D．when |
—What was the party like?
—Wonderful. It’s years __________I enjoyed myself so much.
| A．after | B．before | C．when | D．since |
He didn't make ______ clear when and where the meeting would be held.
| A．this | B．that | C．it | D．these |