— Do you want to buy milk _______ coffee?
— Milk.
A:and
B:or
C:but
D:so
take ____(过去式)
学校升旗仪式上,当升旗手缓缓向下拉绳子时,如图所示,由于旗杆顶部有一个____滑轮,它能改变____,使五星红旗徐徐上升.