Alegeti forma potrivita a verbului din paranteza
We ... (has seen,were seeing,had seen, have seen) a very interesting popular science film in biology today.
When mother ... (came,will come,was coming,comes) home, I will show her my new poem in english.
How long you ... (was studying,had studied,have been studying,are studying) English?
When mother came home, he already ... (was doing,was done,had done,has done) his homework.