To keep healthy, Professor Johnson ______ cycling as a regular form of exercise after he retired.

ad_____yourtestpapercarefullybeforehandingitin,youwouldhavemadefewermistakes.

After a 3-week winter vacation, students usually some weight when they return to school.

This is the very letter ____came last night.

Kate looks ________than Amy.—In fact, she is as ________as Amy.