单项选择题
EMERGENCY EXIT ONLY（）
A．You only have to get in. B．You have to go out that way even if there is no emergency. C．You aren't allowed to go out that way except emergency.
单项选择题 I am sorry but the parts will not be available until 25 January.The parts can be delivered（）
单项选择题 Tick if you wish to make an immediate purchase.You have to tell the company if you want （）
