These plastic flowers look so _____ that many people think they are real, ____they sell badly for the financial crisis.
He began to take political science ________ only when he left school.
My parents have always made me ________ about myself, even when I was twelve.
Work gets done ________ when people do it together, and the rewards are higher too.
_______ time, he’ll make a first-class tennis player.
The teacher asked us _______ so much noise.