—Where is Tom ?
—Well , he you here . Otherwise he would come down right now .
| A．didn’t know ; were | B．hasn’t known ; are | C．doesn’t know ; are | D．hadn’t known ; were |
.
. —OK, $ 500, but that is my last offer.
—_______.
| A．Good idea! | B．What did you say? | C．Oh, it's up to you. | D．OK, it's a deal. |
.
To deal with the global financial crisis, China ______ the international community to help developing countries.
| A．called on | B．called up | C．called in | D．called for |
.
I don't remember how many years ago ______ people began to grow crops.
| A．it was when | B．it was that | C．was it when | D．was it that |
.
Bay, Amazon and Wall Mart are popular websites ______ people can sell goods to each other.
| A．where | B．which | C．when | D．whose |
.
—_____ he have been chosen as captain of the football team?
—Yes, he______.
| A．Can; must have | B．Must; must have | C．Can; must | D．Must; must |