According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.
—Did you hear that Tonna took social management as her major? —Yes,but she shouldn’t have,you see.This kind of subject ________one’s communication ability,and that’s what she is most weak at.
________ you’ve got a chance,you might as well make full use of it.
—When on earth will the bus come?We have been waiting here for what seemed long ages. —Look,________.
It’s high time we ________ effective ________to improve your working conditions.
It’s really very dangerous.One more step,________the baby will fall into the well.