Chọn đúng thì của các câu sau (quá khứ đơn và quá khứ tiếp diễn): 1. Alice saw/ was seeing the accident when she was catching the bus.
2. What were you doing/ did you do when I called?
3. I didn’t visit/ weren’t visiting my friends last summer holiday.
4. It rained/ was raining heavily last July.
5. While people were talking to each other, he read/ was reading his book.
6. My sister was eating/ ate hamburgers every weekend last month.
7. While we were running/ ran in the park, Mary fell over.
8. Did you find/ Were you finding your keys yesterday?
9. Who was she dancing/ did she dance with at the party last night?
10. They were watching/ watched football on TV at 7 p. m. yesterday.