I. Chọn động từ khuyết thiếu đúng (should / must / can / might / have to / could) You ___ wear a helmet when riding a motorbike. It’s the law. ___ I borrow your pen, please? Tom is very strong. He ___ lift this heavy box easily. We ___ finish our homework before going out. She ___ be at home, but I’m not sure. It’s raining heavily. You ___ take an umbrella. II. Viết lại câu sử dụng động từ khuyết thiếu trong ngoặc It’s a good idea to eat more vegetables. (should) → _______________________________________________________ It’s not necessary for you to bring food. (don’t have to) → _______________________________________________________ It’s possible that she is sleeping now. (might) → _______________________________________________________ It’s important to do your homework. (must) → _______________________________________________________ Can I open the window? (could) → _______________________________________________________