Put the verbs in brackets in the correct form(past simple or past continuous tense). 1.When I came home my mom ... dinner for us.( to cook) 2."What ... you ... about?" ( to talk) -"Nothing serious" 3.I'm sorry I couldn't join y...

Put the verbs in brackets in the correct form(past simple or past continuous tense). 1.When I came home my mom ... dinner for us.( to cook) 2."What ... you ... about?" ( to talk) -"Nothing serious" 3.I'm sorry I couldn't join you yesterday. I ... for my exam. ( to prepare) 4. What ... you ... at a minute ago? ( to laugh) - It was the funniest joke l've ever heard. 5.The spaceship cartain ... the satellite which ... very fast.(to notice/ to move ) It was dangerous!