一、根据句意及所给提示填空。
1. They p_______ bask etball at school every afternoon.
2. Eric has to get home b______ eight o’clock e very night.
3. Kate often helps her mom ____________ (清洗餐具).
4. David is so busy that he c an’t ____ ____ (外出) with us.
二、翻译下列句子。
1. 学生不得不每天打扫教室。
2. 她不得不每天穿校服吗？
3. 我放学后不得不做家庭作业。
