Make the active sentence passive. Use modal verbs. (Làm cho câu chủ động thành bị động. Sử dụng động từ khuyết thiếu)

We mustn't use mobile phones during lessons.

Complete the sentence with “mustn't” or “don't / doesn't have to” (Hoàn thành câu với "mustn’t" hoặc "don't / doesn't have to")

He's a brilliant student - he … work hard to get good marks.

Complete the sentence with “mustn't” or “don't / doesn't have to” (Hoàn thành câu với "mustn’t" hoặc "don't / doesn't have to")

Choose the correct verbs to complete the dialogue (Chọn các động từ chính xác để hoàn thành đoạn hội thoại)

Alice: Is this your new video game?

Ryan: Yes, it is. You (1) must / needn't try it. It's great!

Alice: How do I play?

Ryan: First, you (2) have to / mustn't escape from the castle.

Alice: How? Down the stairs?

Ryan: Stop! You (3) don't have to / mustn't open that door!

Alice: Oh! Too late! Am I dead?

Ryan: Yes. But you (4) don't have to / must start again. Just press "B' to continue.

Alice: OK, thanks. What now?

Ryan: You (5) have to / needn't climb out of the window. But slowly! You (6) don't have to / must be careful.

Alice: Oh no. I'm dead again. I'm not very good at this.

Ryan: Well, we (7) have to / needn't play this game. I've got lots of others…..

Alice: No, no. I (8) mustn't / needn't give up. Do I press 'B' again?

Make the active sentence passive. Use modal verbs. (Làm cho câu chủ động thành bị động. Sử dụng động từ khuyết thiếu)

 You mustn't eat those mushrooms.

Complete the sentence with “mustn't” or “don't / doesn't have to” (Hoàn thành câu với "mustn’t" hoặc "don't / doesn't have to")

You can stay up late, but you … make a lot of noise and wake up your sister.

She always pays by credit card so that she … carry a lot of money with her.