Choose the right forn of the verb and write down the sentences 1.We already(were,have,been)to London 2.We(were,have,been) in London 5 years ago. 3.They(didn't see,haven't seen)the Tsar Bell when they were in Moscow. 4.They(didn...

Choose the right forn of the verb and write down the sentences 1.We already(were,have,been)to London 2.We(were,have,been) in London 5 years ago. 3.They(didn't see,haven't seen)the Tsar Bell when they were in Moscow. 4.They(didn't see,haven't seen) the Tsar Bell yet. Помогите пожалуйста.