I have started getting up at 5:30 a.m. to study;I don’t know if I can this .
| A．keep;away | B．keep;out | C．keep;up | D．keep;back |
Life is like a game________you play five balls in the air—work，family，health，friends and spirit.
| A．when | B．that |
| C．which | D．where |
Across all media，people are debating about________we need to keep track of every school bus on China’s road.
| A．how | B．whether |
| C．which | D．where |
Vitamin D helps our bodies make a special chemical，and this special chemical，________，affects our brains，making us feel happy.
| A．in turn | B．in particular |
| C．in advance | D．in short |
Some of us remain________at our computer for hours every day，forgetting moving our body.
| A．seating | B．seated |
| C．sat | D．sit |
—As a teenager，our son should have two or three hobbies to be really happy.
—________，but how can he afford the time with so much homework every day?
| A．So does he | B．So he does |
| C．So should he | D．So he should |