Because of + cụm N / Ving = Because + S + V ...
1. He couldn't meet you because he was busy.
2. She went to bed early because she was sick.
3. Nobody can do this test because it is difficult.
4. Two cars can't pass each other because the road is narrow.
5. We spent the whole day in the garden because the wether was lovely.
6. He can't go to school today because he has a tootache.
7. I can't play basketball because I'm not tall.
8. She must stay in bed because she is ill.
