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

If I remember correctly， _______was ten years ago that your brother went to Canada.

Some teenagers hold the view that parents a full understanding of their children.

Can you imagine how late I went to bed last night？It was nearly 1 a．m.______ I finished my article.

After ________ his right arm, he keep on ________ with his left arm.