The ______ is _______ difficult to answer.

At first, Alice didn’t study well in our class, but she ________ topping in our class with great efforts.

I really don’t know　　next step.

Although the working mother is very busy, she still _____ a lot of time to her children.

－Miss Jonesonce _________ music at a local college for ten years and now is an actress－No wonder Ioften hear her sing some pop songs