—Car prices have been going down sharply in the last 20 years.
—It's not surprising because the law of market ________ the price of a product.
| A．is controlling | B．controls |
| C．has controlled | D．controlled |
The performance______ nearly three hours, but few people left the theatre early.
| A．covered | B．reached | C．played | D．lasted |
Excuse me, Mary, a reporter from Vanity Fair _______ all day. Could you speak to her now?.
| A．has been phoning | B．phones | C．has phoned | D．phoned |
Jack is being ____ in hospital but I don’t know how soon he’ll be all right.
| A．cured | B．treating | C．treated | D．examining |
I wish you ______ go with me tomorrow.
| A．will | B．would | C．shall | D．/ |
We ________ the difficulty together, but why didn’t you tell me?
| A．should face | B．might face | C．could nave faced | D．must have faced |