safe；fix；fifty；silent；speak

（1）The manager of that company asks them to complete the project as the

fixed

fixed

plan says.
（2）He is full of confidence and not afraid of making

speeches

speeches

before others at all.
（3）To break the

silence

silence

，the teacher told a joke and the students all laughed right away.
（4）Jackie Chan was born in the

fifties

fifties

of the twentieth century.
（5）Some people have no awareness of

safety

safety

，They often go straight without looking at traffic lights.