Dưới đây là dạng đúng của các từ trong ngoặc:

5. My friends and I **think** playing board games interesting because I can play them with my friends. (**tell**)
6. I think you shouldn’t use the Net. It is **useless**. (**use / useful / useless**)
7. This dog is **harmless**. It never bites anyone. (**harm / harmful / harmless**)
8. He returned home as **quickly** as he could. (**quick / quicker / quickly**)
9. Life today is very **different** from what it was in the past. (**the same / the same from / different with / different with**)
10. **What** do you think some activities use more calories than others? (**What / Why / Who / How**)
11. **How long** have you been in Hanoi? (**When / How long / How long ago**)
12. **When** did he move to here? (**When / How long / How long ago / When + How long ago**)
13. Don’t watch TV while eating; **it** is harmful to your stomach. (**but / and / because**)
14. Eating junk food **is** going to be late are bad for your health. (**with / so / but / and**)
15. Which book would you buy? The red one, the blue one. (**or / but / so / because**)
16. First, I prepared the meal. **Finally**, I laid the table. (**then / Finally**)
17. The doctor says my father will become ill **if** he stops smoking. (**until / when / unless / if**)
18. What music do you like? **Rock** of course. (**No, I don’t like music. / Rock / Of course**)