Much as he ________ he has a good command of English, he sometimes feels it hard to find an appropriate version for some Chinese idioms.
None knows if _______ that boy, but if _______ him, her parents will be disappointed.
The problem is _____ has caused us a lot of trouble.
He pointed to ______ looked like a tomb and said, “Ghost.”
. We are living in an age ______ many things are done on computer.
After _______ had happened he could not continue to work there.