1) They ... playing.  a) are b) is c) isn’t d) aren't 2) They ... singing.  a) are b) is c) isn’t d) aren't 3) They ... singing. a) are b) is c) isn’t d) aren't 4) They ... climbing. a) is b) am c) are d) aren't 5) I ... cooking. a) is b) am c) isn’t d) are 6) Mary ... drawing.  a) is b) are c) am d) isn't 7) They ... jumping. a) isn’t b) are c) aren’t d) is 8) They ... jumping.  a) isn’t b) are c) aren’t d) is 9) I ... reading.  a) am   b) is c) are d) am not 10) The boy... riding a bike.  a) is b) am c) are d) isn't 11) Tom ... eating.  a) is b) am c) are d) isn't 12) He ... running.  a) am b) are c) is d)  isn't 13) My friend ... singing now. a) are b) is c) isn’t d) am 14) We ... flying. a) are b) is c) am d) aren't 15) You ... writing .  a) am b) are c) is d)  aren't 16) The dog..... eating. a) am b) is c) are d) isn't 17) The cat..... playing. a) am b) is c) are d) isn't

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