---Why did he get up so early in the morning? --- He got up early in order that he could catch the early bus.
The number of the students in our school is about nine ____. ____ of them are boys.
—Do you think yesterday’s math problem was difficult? —Yes. I could ________ work it out.
—What’s the low-carbon life style like? --Save_______ energy, produce ________ carbon.
—Which of the caps will you take? --I’ll take _______,one for my father ,the other for my brother.
–How was _______dinner at Mike’s house? --It was great. Mike’s mum is ________wonderful cook.