三、句型(语法)
1. Learning foreign languages is fun. (做主语)
Keeping the classroom tidy ____________ (be) necessary.
2. We can borrow more books from the school library.
borrow sth. from …… (反义) lend sth. to ……
You can __________ an interesting book __________ Lily.
Lily can __________ an interesting book __________ you.