18.——would you like to go and see the film with me this evening?——I am sorry, I can’t because I ________my homework.
._______ after a long walk , Mr Yang called and said he couldn’t come .
.It is ______ to spend money on preventing illnesses by promoting healthy living rather than spending it trying to make people ______ after they are ill .
As she lives quite near our school , she often goes to work on an electric bike ___ in her car .
The board are discussing the possible _____ they can take of the present economic situation.
Before he started work , I asked the builder to give me a (n) _____ of the cost of the museum.