16. I usually go to work with a friend, but yesterday I drove to work by himself
A B C
because he was ill.
D
17. Alex doesn't have to take his medicine yesterday because he was better.
A B C D
18. It is not safe leaving small objects around the house.
A B C D
19. Please try being quiet when you come home because everyone will be asleep.
A B C D
20. He said that my sister is a good cooker.
A B C D