In my opinion，his suggestion__________right or not，should be considered.
| A．if | B．which | C．when | D．whether |
—You could have asked Mr Johnson for help. He is kind-hearted.
—I ________ that. A whole day ________.
| A．forget; wastes | B．forgot; was wasted | C．forgot; had wasted | D．forget; was wasted |
—Why do you look worried?
—Fred left the company half an hour ago. His work ________ unfinished since.
| A．left | B．was left | C．has left | D．has been left |
She ought to stop working; she has a headache because she ________ too long.
| A．has been reading | B．had read | C．is reading | D．read |
When I called you this morning, nobody answered the phone. Where ________?
| A．did you go | B．have you gone | C．were you | D．had you been |
—Did Alan enjoy seeing his old friends yesterday?
—Yes, he did. He ________ his old friends for a long time.
| A．didn’t see | B．wouldn’t see | C．hasn’t seen | D．hadn’t seen |