1) While Jim --------------,he ----------a shark . a) were swimming b) swam c) was swimming d) see e) saw f) seen 2) While we------a picnic,it----to rain. a) was having b) have c) were having d) start e) starting f) started 3) While Mum was----a cake--someone ----on the door. a) . b) , c) making d) make e) knock f) knocked 4) While I---------my homework---my friend----. a) did b) . c) was doing d) , e) come f) came

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