Please ___________ the rubbish into different litter bins according to the signs．（ ）
A．putsB．putC．to put
room is big and nice．（ ）
A．Kate's and Jane'sB．Kate's and Jane
C．Kate and Jane's
﹣Mum，must I clean my room？﹣No，you ．（ ）
A．mustn'tB．needn'tC．can't
I don't know he will come or not this afternoon．（ ）
A．ifB．whenC．whether
﹣ did you write to last night？﹣A pen pal．（ ）
A．WhatB．WhereC．Whom
She is listening to music he is doing his homework．（ ）
A．afterB．beforeC．while