18. ---- Are you free after school?
---- Sorry. I’ve planned to treat a friend of mine to dinner _______for his help.
| A．in charge | B．in honour | C．in turn | D．in return |
Look at the trouble I am in! If only I your advice!
| A．followed | B．had followed | C．should follow | D．would follow |
The teacher demanded all the exercise books ______ the next day.
| A．to be handed in | B．would be handed in | C．be handed in | D．to hand in |
______ I could say a word, she had stormed out of the room.
| A．When | B．As | C．While | D．Before |
One of the best ways for people to keep fit is to ______ healthy eating habits.
| A．grow | B．develop | C．increase | D．raise |
I’m sorry to say you didn’t pass the exam-- ______, you won’t receive the diploma.
| A．on the whole | B．believe it or not | C．in other words | D．after all |