In the past several weeks, many cities in Northern China from heavy fogs and severe cold.
In which play is _____ your brother appear?
It must be he that has stolen Mr. Smith’s purse, _____?
Playing football and watching TV _____ both interesting.
---Is anything _____?---I can’t decide which dress I should wear at my friend’s wedding party.---I don’t think it ____.
Mr Smith, ________of the________speech, started to read a novel.