1) I waited outside _______ my son had an interview a) When b) While  2) My mother sang ______ she washed the dishes a) While b) When 3) ________ I saw him at the last time he was arguing with a big guy a) When b) While 4) He was studying lesson _____ the telephone rang a) When b) While 5) I found a flower between the papers _______ I opened my book  a) While b) When 6) Ayşe was doing her homework ________ the electricity went off a) When b) While 7) The electricity went off ______ Ayşe was doing her homework  a) When b) While 8) My mother sang _______ she washed the dishes a) While b) When 9) She was cheating on the exam _______ the teacher was gone  a) When b) While 10) My mother was making dinner _______ I came into the kitchen a) When b) While

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