1 1. Is Mark having 2.is working 3.isn t using 4.are sitting 5.are you listening 6.am reading 2 (7) are you doing (8)am cooking (9)are they watching (10) aren t watching (11)is painting (12)is nina helping 3 13 are you talking 14I don t need 15 we go 16 do you understand 17 he s getting 18 hates 19 are you laughing 20 do
