4. Заполни пропуски предлогами for или since. a) He has been playing the guitar …he was 14. b) They have been studying

a) He has been playing the guitar since he was 14. — Он играл на гитаре с 14 лет.

b) They have been studying together since 1987. — Они учатся вместе с 1987 года.

c) I’ve been writing poems for two years. — Я писал стихи два года.

 Has he been playing the guitar since he was 14?

Have they been studying together since 1987?

Have I been writing poems for two years?