Помогите пожалуйста! Заранее спасибо.
Задание: Complete the questions by putting the verds in brackets ( ____ ) into the Present Perfect Continuous form of the verb.
a) How long ___ Omar ___ (play) dombra?
b) How long ___ Asel ___ (sing)?
c) How long ___ Dmitry ___ (watch) TV?
d) How long ___ Jennifer and Asel ___ (talk) on the phone?

a) How long _has__ Omar _been__ (playing) dombra? b) How long _has__ Asel _been __ (singing)? c) How long __has_ Dmitry _been__ (watching) TV? d) How long _have__ Jennifer and Asel __bwwn_ (talking) on the phone?