____________ cease（终止） advertising, prices would be significantly reduced.
| A．Were they to | B．Could they |
| C．If they | D．Would they |
If we work with a strong will, we can overcome any difficulty, ________great it is.
| A．whatever | B．however | C．wherever | D．whenever |
“Can’t you read?” Mary said _______ to the notice.
| A．angrily pointing | B．and point angrily |
| C．angrily pointed | D．and angrily pointing. |
The teacher commanded that the exercises _______ in an hour.
A. was finishedB . were finishedC should finishD. be finished
_______ is the most useful invention?
| A．Do you think which of these | B．Which of these do you think |
| C．Which of these you think | D．You think which of these |
______his food______, the man had to come out of his hiding place.
| A．Since; runs out | B．Because; ran out |
| C．With; run out | D．For; running out |