【2014湖南益阳】 _____ of the students in our class _______ girls. A. Two fifth; is B. Two fifth; are C. Two fifths; are
—Sir,could you please put out your cigarette?This is a smoke-free(无烟的)school. —________.
I will do some cleaning as soon as I________my homework.
I wanted to help my mother do the housework.She asked me to________the rubbish.
—Could you please help me sweep the floor? —________.
—Could I use the phone,Miss Li? —________.