I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour.
| A．should have been doing | B．must have been doing |
| C．could have done | D．would have done |
--why don’t we choose that read to save time?
--The bridge to it ________.
| A．has repaired | B．is repaired | C．is being repaired | D．will be repaired |
Many people in the west make ________ a rule to buy Christmas presents for their relatives and friends.
| A．this | B．it | C．that | D．them |
They were all very tired, but ________ of them would stop to take a rest.
| A．any | B．some | C．none | D．neither |
Come and see me whenever ________.
| A．you are convenient | B．you will be convenient |
| C．it is convenient to you | D．it will be convenient to you |
--The plane is due to take off at 7∶50 from the airport.
--________ we fail to arrive there in time?
| A．What if | B．As if | C．Even if | D．Only if |