It is for a person in his position to make such a mistake.
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。