Cho dạng đúng của từ trong ngoặc

) Chris(cook)……….. burgers for breakfast when his landlord (knock)…………….. on his door.
2) The police (arrest)………. Chris when he (paint)…………….. the house.
3) Chris (pay)………….. some parking tickets when the officer(tell)……… him he was supposed to spend the night in jail.
4) When Chris (call)………. his ex-wife, she (work)………… hard.
5) When he (enter) …………..the elevator, he (try) …………..to button up his jacket.
6) He (wait)…………. in the waiting room when the secretary (call)………….. out his name.
7) When he (walk)………….. through the office, businesspeople (talk)………….. on the phone, (speak) ……………very loudly, and (work)……………. a lot.
8) The Board (wait) ………..for Chris when the secretary  (announce)…………. him.