It _____ last week that the haze(雾霾)in Beijing caused many problems.
—_______________? -- I have a fever.
—______do you write to your parents? -- Twice a month.
As for _____homework, we do ________homework every day.
The boy can speak English well, _____he’s only ____eight-year-old boy.
What should I do ? Can you give me _______?