----- Nội dung dịch tự động từ ảnh -----
3. Unless you go out more often, you might fall ill.
->>If
4. If you don't return this book to the library today, you'll have to pay a fine.
=> Unless
5. Unless he cleaned up the car now, his boss could ask him to do this.
⇒ If
6. If she doesn't water these trees, they will die
<-> Unless
7. I only come if they invite me.
-Unless
8. In case it rains, we'll stay at home. (if)
=>
9. You can't visit Paris unless you get a visa. (If)