______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
| A．Although | B．As long as | C．If only | D．As soon as |
Seeing the car trapped in the snow drift, the driver didn’t know ______ it.
| A．how to do | B．what to do |
| C．how to deal with | D．how to do with |
________ English will help to communicate _____ people from different countries in the world.
| A．Known; with | B．Knowing; with | C．To know; to | D．To know; in |
— I have just had my watch repaired.
—How much did they ______ you?
| A．pay | B．charge | C．cost | D．spend |
— Can I help you, madam?
— Yes, I bought this air conditioner here yesterday, but it _____ now.
| A．didn’t work | B．won’t work | C．can’t work | D．doesn’t work |
She knows that as a secretary she must be pleasant and helpful no matter how busy she is or what kind of ____ she may be in.
| A．mood | B．mind | C．form | D．thought |