(   )28.－_____ you put away your books?－Yes, mum. I’ll do it at once.

Keep up good state of mind even if you ________ fail plenty of times.

Tina gets up late, so she _____ go to school by taxi.

--Would you like to visit Kun Ming by yourself this summer vocation? --I’m not sure. I _____go there with my parents because of the terrible thing at the railway station.

She is a quiet girl at school，but sometimes she _____ be very naughty.