They got two free tickets to Canada, otherwise they______ able to afford to go.
| A．wouldn’t have been | B．mustn’t have been | C．wouldn’t be | D．hadn’t been |
单项选择（每题1分）
She opened the window, _____ in some fresh air.
| A．letting | B．let | C．to let | D．to be let |
单项选择（每题1分）
My computer is _____ in need of repair because it doesn’t work at all.
| A．well | B．very | C．badly | D．rather |
单项选择（每题1分）
—Tomorrow is Christmas!
—_____? We have no holiday anyway.
| A．What if | B．So what | C．Why | D．Really |
单项选择（每题1分）
We must think twice _____ we make the final decision.
| A．when | B．while | C．until | D．before |
单项选择（每题1分）
The stones each _____ as much as two tons.
| A．weighs | B．are weighed | C．weigh | D．is weighed |