3. Choose the correct form.
(Chọn hình thức chính xác.)
1.Sorry, I (a) had / was having a shower when you (b) called / were calling.
2. (a) Did Lola stand / Was Lola standing outside when it (b) started / was starting to rain?
3. When the car (a) crashed / was crashing into us, we (b) waited / were waiting at the traffic lights.
4. Fortunately, we (a) didn’t ski / weren’t skiing when the bad weather (b) came / was coming.
When + past continuous (clear point of time – thời gian cụ thể) simple past:
=> Khi một hành động đang diễn ra thì một hành động khác xảy đến

1.Sorry, I (a) was having a shower when you (b) called.
(Xin lỗi, tôi (a) đang tắm khi bạn (b) gọi.)
2. (a) Was Lola standing out side when it (b) started to rain?
((a) Lola có đứng ngoài trời khi (b) bắt đầu mưa không?)
3. When the car (a) crashed into us, we (b) were waiting at the traffic lights.
(Khi chiếc xe (a) đâm vào chúng tôi, chúng tôi (b) đang đợi đèn giao thông.)
4. Fortunately, we (a)weren’t skiing when the bad weather (b) came.
(May mắn thay, chúng tôi (a) đã không trượt tuyết khi thời tiết xấu (b) đến.)









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