G4. CẤU TRÚC KẾT HỢP QKĐ VÀ QKTD

I (have) dinner when I suddenly heard a loud bang.

• was having

• were having

• had

• having

1.  The rain ______________  when my father _____________ the car.

• started / was washing
• started / washed
• was starting / washed
• started / were washing

When the teacher came in, they _____ (study) English.

• were studying

• studied

• was studying

The baby was sleeping when the telephone _____ (ring).

• rang

• ring

• was ringing

While I _____ (walk) in the streets of Holland, I met an old friend of mine.

• was walking

• walked

• was walked

While I was texting, the school bus _____ (come).

• came

• comed

• was coming

When I saw them, they _____(play) under a tree in the park.

• were playing

• was playing

• played

While we ________ the topic, the teacher came in.

• are discussing

• were discussing

• discussed

• discusses

She ________ her homework when the lights went out.

• was doing

• did

• is doing

• does

I ___________ (study) for my English test when my mother ___________ (go) home.

• was studying/ was going

• studied/ went

• studied/ was going

• was studying/ went