He was sent to Australia _______ when he was ten years old.

_______ is better to love than _______.

Our teacher insisted that the key words worth paying attention _______ before class.

That is the only way we can imagine _______ the overuse of water in students’ bathrooms.

More and more people will fall in panic, as the expert predicts, if not _______ properly.

Taiwan—born film-- maker Ang Lee won the Oscar for best Director at the 78^th Academy Awards, _______ the highest honour in American movie fields.

________ in 1936, Harvard is one of the most famous universities in the United States.

I can make you _____ what I say, but you can’t make yourself ___________ in English.

He found them __________ at a table___________.

A．sat; to play chess	B．sitting; to play chess
C．seated; playing chess	D．seat; play the chess

With a lot of difficult problems_____, the newly-elected president is having a hard time.