He tried to avoid making mistakes, but the added pressure caused him to make more than his usual______________.
| A．size | B．space | C．share | D．state |
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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 |
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—_____ 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 |
.
The Bank of China, having so far woven its network in 27 countries, ______ its business in Brazil in June 2009.
| A．has started | B．was starting | C．will start | D．started |