Phần 4.Make question with "why" for the following sentences. 1.he didn't do it because he was too busy. 2 .I study English because I want to speak to foreigners. 3.He can't take part in the activity because he isn't old enough. 4 .He was absent from the class because he was sick. 5 .The children stopped laughing because they saw the teacher. 6.I am late because I have to wait for Mary. 7.Robert must stay in bed because he is I'll.

I enjoyed...at the circus

There is one mistake in each sentence.Correet the mistakes(Đây là đề ạ). Mấy chỗ bị gạch xanh là do mình gạch thui ạ .Đề không có.Mong các bạn giúp ạ