—Are you pleased with what he has done? —It couldn't be ___________ Why didn't he put more effort into his work?
I’ll never forget the years______I lived in the country with the farmers,______ has a great effect on my life.
______ is known to all,Taiwan is a part of China.
The students gave a quick answer to the question ________they did it,________was raised by the foreign visitors.
This dictionary,the few pages _________are missing,is of no use.
I slept on the bed _________ I put my shoes.