He was ill _____ a week, and _______ the week he ate almost nothing .
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.
He pretendedEnglish when his father entered.