1) Mary ........ swimming a) are b) is c) am 2) I ........walking to school a) am b) is c) are 3) The dog .......chasing the cat a) are b) is c) am 4) The children ......watching TV a) are b) is c) am 5) We......having lunch a) are b) is c) am 6) Bob......eating an apple a) am b) is c) are

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