--- How many hours do they exercise every day?
----________.
A. Twice a day B. Often C. Two
I really don’t know what toabout such a thing.
| A．say | B．speak | C．talk | D．tell |
I think your advice is of great value to me and it’s worth.
| A．to take | B．taking | C．to give | D．giving |
It's quite strange that the man sleeps with his mouth_____ and his eyes ______.
| A．closed; open | B．closed; opened | C．closing; open | D．closing; opening |
—I wonderTom will come to our party.
—He will when he finishes his work, I think.
| A．how | B．whether | C．that | D．what |
—Did you see him yesterday?
—No, when I got to the airport, he a taxi for home.
| A．has taken | B．had taken | C．will take | D．would take |