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№ 834 : He _____ cooking when he _____ 15 years old. Anonymo | English tests for whole world

№ 834 : He _____ cooking when he _____ 15 years old.
Anonymous Quiz
57%
A) started / was
11%
B) has started / has been
24%
C) ‘s started / was
7%
D) started / has been