--- Do you have any idea what Paul does all day?--- As I know, he spends at least as much time playing as he .
Whenever he was asked why he was late for class,he would answer carelessly,______ the same thing.
He is the most suitable person _______the task.
_________, the experiment is sure to succeed.
The cost of buying a house in Beijing is higher than ______in Luoyang。
.There are over 58000 rocky objects in _______space,about 900 of which could fall down onto ______earth。