—Is that girl in red ,Sally?—No, it_______ be her. She has gone to Hong Kong.
He _______ for two years. We are still sad about his _______.
I feel it hard to keep up with my classmates. But whenever I want to _______, my teacher always encourages me to work harder.
You can’t pass the exam ______ you study harder.
The basketball isn’t _____. It belongs to _________.
There are many boysfootball in your school.