确保付出辛劳和汗水的农民工按时拿到应有的报酬。()

A. He has some mental problems.
B. He is too old to know what he is doing.
C. He wants to have a good Christmas.
D. He has got into the habit of stealing.

A. Creating a situation where students can complain.
B. Providing model complaints for students to follow.
C. Analyzing the languages and structures for complaints.
D. Giving students practice on how to complain by role play.

A. It is just about any amount of physical activities that will improve fitness.
B. It is just anything that you need to exert yourself to do to burn calories.
C. It means all forms of vigorous activities or deliberate workouts.
D. It includes every exercise which keeps your muscles long and supple.