选择括号内恰当的单词或词组填空，使句意完整

选择括号内恰当的单词或词组填空，使句意完整
小题1:—— （Which , Whose）schoolbag is that?
——It’s Tom’s.
小题2:—When did you hear the news?
—I know nothing about it （until , after）my friend told me.
小题3:One of my friends （are , is）a doctor.
小题4:My mother is feeling （badly , terrible）. She must have a cold.
小题5:We’re OK. Don’t （worried , worry）about us.