I . Supply the correct verb form 1 when I (arrive ) this house, he still ( sleep). => 2 The light (go out) when we (have) dinner. => 3.Bill (have) breakfast when I (stop) at thit house this house this morning. => 4 .As we (cross) the street, we (see) an accident. => 5. Tom (see) a serious accident while he (stand) at the bus stop. => 6. While my father ( read) the newspaper, I ( learn) my lessonand my sister (do) her homework. => mình đang cần gấp

a) When I arrived at this house, he was still sleeping.

(When+Quá khứ đơn+Quá khứ tiếp diễn)

b) The light went out while we were having dinner.

(Quá khứ đơn+while+Quá khứ tiếp diễn)

c) Bill was having breakfast when I stopped at thier house this morning.

(Quá khứ tiếp diễn +when+QKĐ)

d) As we were acrossing the street we saw an accident.

e) Tom saw a serious acciedent while he was standing at the bus stop.

Quá khứ đơn+while+QKTD

f) While my father was reading a newspaper, I was learning my lesson and my sister was doing her homework.

Trong câu có while nên chia theo QKTD

j) The children were playing fooball when their mother came back home.

QKTD+when+QKĐ

*Notes:

Công thức thì QKTD: 
(+) S+was/were +Ving+O
(-) S+wasn't/weren't +Ving+O

(?) Was/Were + S+Ving+O?

Công thức thì QKĐ:
(+) S+V past+O

(-) S+didn't +V+O

(?) Did+S+V+O?

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