I'm sure you'd rather she went to school by bus, ?
—How long ____ you ____ in Singapore?—For just the weekend. I’ll be back next Monday morning.
Every possible means ___ to prevent the air pollution, but the sky is still not clear.
A friend of ______ went to the railway station to see ______.
Do you know when Mr Brown_______ ? When he_______ , please let me know.
_____ get a better score, she has been studying hard all day.