The young girl did ________ preparation work for her speech before she stood on the stage confidently.

下列各句中，没有语病的一项是

ents, without ______ help I wouldn’t have becomewho I am, have taught me the true meaning of life

一Have you ever been to America—No, I have______________been there.

The group is made up____five studentsAnd they are studying hard to make up____ the lost time