According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.
— ______ him off tomorrow, or you will regret it. — I will.
— I’ ll help you prepare for the party on Wednesday. — Please don’t ______. My sisters have promised to help me.
— Mom, I’ m going to the graduation dance tonight but I don’ t think I look attractive enough. — Oh, darling, don’ t worry. _______
______ a little more time to think, he might have acted more sensibly.
Only in recent years ______ begun to realize that wild dogs, kept within bounds, often do more good than harm.