A．tiredB．fireC．hireD．bird

We kept our ______ all night to frighten the wolves.A．burning fireB．burnt fireC．fire burni

听力原文：How is the new secretary we hired doing her job？（A)I think we have to hire her.（B

A fire involving aluminum powder would be a class _____.A."A" fireB."B" fireC."C" fireD."D

【C8】A．tiredB．excitedC．boredD．surprised

______, he helped me with my work.A．As he was tiredB．Tired though he wasC．Tired as was heD

We are warned______.A．not play fireB．not to play with fireC．don" t play fireD．don" t play