The president of the World Bank says he has a passion for China，________he remembers starting as early as his childhood. (2013·江苏，32)
| A．where | B．which |
| C．what | D．when |
.
We could hardly believe what she says because she is ______ changing his mind.
| A．regularly | B．steadily | C．suddenly | D．constantly |
.
. —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 |