Haze weather has become common in some major cities in China. We all wonder ________.

As time , you’ll come to think of English as your friend and love it.

________ we go swimming in Xishuanghu Lake today —- Oh, no. It’s ________ cold to swim on suchdays. I will catch a cold.

Could you please _______ so loudly I can’t follow the teacher.

Things of___kind come together; peopleof____kind fall into___same group.