Looking out of the window of my room, ___ a tall tree in the yard.
Mr. Smith,of the speech, started to read a novel.
I couldn’t . The line was busy.
It is highly desirable that every effort to reuse the pollution in Beijing.
It is said that Tom’s sister fell off her bike on her way to school, _____ in the left leg.
to his research, he spared no time to spend a weekend with us.