4 A: We 1) (stand) by the door when the children 2) (walk) in.- B: 3) what they looked like? (you/see) A: No. They 4) scary costumes. (wear) 5 A: What 1) when he 2) (you/do) (faint)? B: 13) .................... (call) an ambulance. с объяснением

Let's fill in the blanks with the appropriate verb forms and provide explanations for each choice. ### Completed Dialogue **A**: We 1) **stood** by the door when the children 2) **walked** in. **B**: 3) **Did you see** what they looked like? **A**: No. They 4) **were wearing** scary costumes. **5** A: What 1) **were you doing** when he 2) **fainted**? **B**: 3) **I called** an ambulance. ### Explanations: 1. **"stood" (stand)**: This is in the past simple tense, indicating a completed action in the past. 2. **"walked" (walk)**: Also in the past simple tense to describe another completed action that occurred when A and B were standing by the door. 3. **"Did you see" (you/see)**: This is a past simple question form, asking if the person had the experience of seeing the children. 4. **"were wearing" (wear)**: Here, we use the past continuous tense, which describes an ongoing action in the past (the children’s costumes) when A was trying to recall their appearance. 5. **"were you doing" (you/do)**: This is a past continuous question form, which indicates an ongoing action at the time when the fainting occurred. 6. **"fainted" (faint)**: This is in the past simple tense, indicating the completed action of fainting. 7. **"I called" (call)**: This is in the past simple tense, indicating that the action of calling an ambulance was completed in the past. Let me know if you need further assistance with your exam preparation!