Хей , . : 3 тут у меня , проверьте , все ли правильно. и нужны ли в этих предложениях was или were если глагол правильный или не правильный. вообщем , проверьте постороение предложений и was и were. буду за решение: 3 yesterday dad was watched a tv. yesterday i was played the piano at 5 o'clock. yesterday i met nick on the street. yesterday mom was cooked a tasty pie. last summer, my parents went to london. my friend didn't homework last week. what did you do last weekend?

Yesterday dad watched a TV. Yesterday I played the piano at 5 o'clock. Yesterday I met Nick on the street. Yesterday mom cooked a tasty pie. Last summer, my parents went to London. My friend didn't do homework last week. What did you do last weekend?

Наречие yesterday может стоять либо в начале, либо в конце предложения, но предпочтительней все-таки в конце.
Yesterday dad was watchING TV - если вы хотите подчеркнуть продолжительность действия в Если, как факт, то будет Yesterday dad watched TV
Yesterday I was playING piano at 5 o'clock. -продолжительность действия или же Yesterday I played piano at 5 o'clock. 
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Yesterday mom cooked a tasty pie.
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My friend didn't DO (his/her) homework last week.
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