—My mother has been ill for several days. —____________
Nanjing Underground Line 10 ______ on the morning of February 27th, 2014.
—Are you sure you have to? It’s been very late.—I don’t know ______ if not now.
I ______ use a clock to wake me up because at six o’clock each morning the first train passes by my house.
More Hope Schools have been ______ in China to help children to return to school in the past few years.
—Unluckily, you couldn’t come to the picnic with us. It was so much fun there. You must come next time.—No, thanks. I don’t think I ______ any fun.