单项选择题
Old Chinese are not used to buy things on ______ and ar...
单项选择题Old Chinese are not used to buy things on ______ and are likely to save as much money as possible.
You should have put the milk into the ice-box, I expect...
单项选择题You should have put the milk into the ice-box, I expect it ______ undrinkable by now.
I understand ______ preparation that staff must put in ...
单项选择题I understand ______ preparation that staff must put in under pressure to meet the deadline.
