-Jenny took the 8:00 bus to Guangzhou this morning.-Really? He__the 9:00 train. It's much more comfortable and safer to travel by train.
The squirrel was lucky that it just missed___________.
Charles Babbage is generally considered______-the first computer.
_________a reply, he decided to write a sixth letter.
The secretary worked late into the night, ______a long speech for the president.
To master a foreign language,______.