1) Ana: I'm sorry I'm late! WHILE I __________ (come) to meet you, I saw an accident. Sara: Really? Where? a) was coming b) came 2) I was walking in the park WHEN I ___________ (see) some actors on stage. a) was seeing b) saw 3) They ____________ (perform) a play when I saw them. a) were performing b) performed 4) One of the actors was running on the stage WHEN he __________ (fall) off. a) was falling b) fell 5) Lots of people __________ (help) the actor when a doctor arrived. a) were helping b) helped 6) The doctor _________ (walk) in the park when he saw the accident. a) was walking b) walked 7) The doctor ___________ (try) to call an ambulance when his cell phone battery ran out. a) was trying b) tried 8) I was standing near him WHEN his celphone _____________ (stop) working. a) was stopping b) stopped 9) I was trying to call him WHEN the ambulance _____________ (arrive). a) was arriving b) arrived

When and While

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