Find the word which has different sound in the part underlined

Bài 1.Find the word which has different sound in the part underlined
1.Look!The girls are___rope in the playground
A.dancing           B.playing          C.skipping           D.doing 
2.Hoa is___at Physics than her sister
A.good            B.best         C.better         D.the best
3.My new house is___than the old house
A.more convenient           B.convenient            C.the convenient         D.most convenient
4".What are you doing this afternoon?"
-I don t' know,but I d' like to___swimming."
A.have           B.do        C.play         D.go
5.My mother is a good cooks.She often ___special food at Tet
A.buys        B.cooks        C.takes         D.brings
giúp mk nha mai nộp rùi