1) They were doing homework .......... the light went off. a) When b) While 2) He broke his tooth ......... he was eating sweets. a) When b) While 3) I .......... dinner when the door knocked. a) ate b) was eating c) were eating 4) ...... I saw him, he was playing tennis. a) While b) When 5) I left home ....... my parents were sleeping. a) When b) While 6) ......... I was studying, he came in. a) When b) While 7) ...... I went out, it was snowing. a) When b) While 8) What were you doing ........ I called you ? a) While b) When 9) I ...... my leg while I was playing football a) broke b) was breaking c) breaked 10) The teacher ........... a question to me while I was not listening to her. a) was asking b) asks c) asked

When/While - Past Cont.

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