The flood started and we had to_____higher ground.
| A．seek | B．search | C．discover | D．invent |
The manager has _______ to improve the working condition in the company.
| A．accepted | B．allowed | C．permitted | D．agreed |
A computer does only what thinking people _________.
| A．have it do | B．have it done | C．have done it | D．having it done |
--- It was careless of you to have left your clothes outside all night.
--- My god! _________.
| A．So did I | B．So I did | C．So were you | D．So did you |
There was a lot of fun at yesterday’s party. You ___ come, but why didn’t you?
| A．must have | B．should | C．need have | D．ought to have |
One more week, ______ we will accomplish the task.
| A．or | B．so that | C．and | D．if |