Helen is ______ American girl and she often plays ______ badminton.

Nowadays car owners complain about the traffic jam，but there is no sign that the number of household cars would be________.[ ]

词义替换—Why not go out and walk a pet dog. —Good idea.

What do you think of my answer to the question— Sorry. What’s that I _______ about something else.

His son often ______with me after school.