Use the emphatic structure “It is / was …. that…” to rewrite the sentences. (câu chủ động)

II. Use the emphatic structure “It is / was …. that…” to rewrite the sentences. (câu chẻ chủ động)
7. She bought him a computer at this shop.  
8. I have been waiting for John.
9. My father is interested in detective stories.
10. Mary sent me the present by post.   
11. We can’t go out because of the rain.   
12. You will succeed only by hard work.