16. Some doctors and health experts agree that butter, A , B .
A. 1. it is unlike coconut oil 2. unlike coconut oil
3. coconut oil being different 4. that is different from coconut oil
B. 1. which is not good for people’s health
2. for people’s health is not good
3. is not good for people’s health
4. is for people’s health not good
17. As soon as A their lunch, they B rehearsing for the play.
A. 1. the actors all will have 2. all the actors have had
3. all the actors had 4. the actors have all
B. 1. are resuming 2. will resume
3. have resumed 4. will have resumed
18. Proper nutrition and regular exercise A you lose weight B .
A. 1. that are necessary to help 2. are necessary to help
3. which can necessarily help 4. are necessities for helping
B. 1. and improve your state of fitness
2. which can improve your fitness state
3. while your fitness state is improved
4. and can improve your state of fitness