1) They....... sad. a) is b) isn't c) aren't 2) I ..... old. a) is b) am not c) am 3) It......... clean. a) isn't b) aren't c) is 4) It ......... short. a) is b) isn't c) aren't 5) It ........ empty. a) isn't b) is c) are 6) It ........ big. a) are b) is c) isn't 7) They....... at school. a) are b) aren't c) isn't 8) It ....... dirty. a) is b) are c) isn't 9) I ...... a swimmer. a) am not b) am c) are 10) we........ giraffes. a) are b) isn't c) aren't

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