1) They ... dancing.  a) am b) is c) are 2) They ... climbing. a) is b) am c) are 3) I ... cooking. a) is b) am c) are 4) Billy ... diving.  a) is b) am c) are 5) She ... painting.  a) are b) is c) am 6) He ... flying a) are b) is c) am 7) They ... jumping. a) is b) are c) am 8) I ... reading.  a) am b) is c) are 9) He ... riding a bike. a) am b) are c) is 10) He ... running.  a) am b) are c) is 11) She ... singing. a) are b) is c) am 12) They .. swimming  a) are b) is c) am 13) He ... writing a) am b) are  c) is

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