4. Minh looks younger than Nam
-> Nam looks ............................................................
5. No restaurant in the city is better than that one.
⇨ That restaurant is …………………
6. This watch is worse than that one.
⇨ That watch isn’t ………………….…
7. If Henry doesn’t pass the exam, his parents will be sad.
=> Unless .......
8. If he leaves soon, he won’t miss the train.
=> Unless ............