He helps them by giving them some food(对划线部分提问) ______ ______he________them?You mustn‘t sing in the classroom。改为祈使句____ _____in the classroom.Trees can clean the air.同义句转换Trees can _____the air______.
问题描述：
He helps them by giving them some food(对划线部分提问) ______ ______he________them?
You mustn‘t sing in the classroom。改为祈使句
____ _____in the classroom.
Trees can clean the air.同义句转换
Trees can _____the air______.
答
How does help
答
how does he help them?
don't sing
make;cleaner
希望能帮助到你
答
How does; help
Don't sing
make; clean