The vocabulary and grammatical differences between British and American English are so slight and few as hardly ________.

The country has already sent up three unmanned spacecraft, the most recent          at the end of last March. 

As a result of the serious flood，two thirds of the buildings in the area ______.

There was nothing we could do that day ____ him down but _____ him in the house.

I got to the office earlier that day，________the 7∶30 train from Paddington.(2013·大纲全国，25)