______family name is Brown. They are brothers.

_____ his timely help, Kate overcame the hardship at last[ ]

’s so cool in the house. You _______have turned on the air-conditioner, haven’t you

Shall we go out for aswim? —Sorry, I can’t. I ______ housework for my mother now.

I’m considering _____a teacher after graduation because a teacher is often considered _____ the engineer of the human soul.