+ Rewrite each sentence, beginning as shown, so that the meaning stays the same
Câu 31: We use some houseplants to remove mosquitoes. → Some houseplants are used for............................................................................................
Câu 32: In the middle of our lunch, Peter came. → When we.....................................................................................................
Câu 33: I took some pills because of my headache. → I got a headache, ............................................................................................................
Câu 34: I started to work as a secretary 5 years ago. → I have .........................................................................................................................................
Câu 35: His performance made me bored. → I found .......................................................................................................................................