Sunglasses are used________protecting your eyes on sunny days.[ ]

Are you coming to Davy’s party, Kate ?— I’m not sure, I ________ go to the movies instead.

I think it’s going to be an argument.（争论）—Yes, it could be.—I wonder ______we can do .

Is your ball on the chair?—No. It’s ______ the chair. [ ]

I missed the beginning of ________musical programme The Voice of China. —What a pity! You should leave school half _______ hour earlier.