Combine the ideas, using a cause of purpose.
(Dùng in order to, so as to, in order not to, so as not to/ so that/ in other that) để nối câu.
19. This lady came to my house. She explained how to absent yesterday.
-> ................................................................................................................
20. I wrote to John. I didn't come to his house last night.
-> ................................................................................................................
21. They gave him $2. They keep his mouth shut.
-> .................................................................................................................
19 This lady came to my house in order to/so as to explain how to absent yesterday.
20 I wrote to John so as not to/ in order not to come to his house last night.
21 They gave him $2 in order to/so as to keep his mouth shut.