Образуйте форму past perfect continuous от следующих глаголов: to joke, to laugh, to celebrate, to run, to lie, to hang, to burn, to keep, to play, to look, to sing, to dance, to swim, to lie in the sun. проспрягайте в past simple глагол to be в данных сочетаниях: to be busy, to be hungry, to be happy, to be right, to be wrong, to be sure, to be born.

Had been joking, had been laughing, had been celebrating, had been running, had been lying, had been hanging, had been burning, had been keeping, had been playing, had been looking, had been singing, had been dancing, had been swiming, had been lying in the sun

was/were busy
was/were hungry
was/were happy
was/were right
was/were wrong
was/were sure
was/were born

*Если I/He/She/It употребляется was
Если You/We/They употребляется were  

Had been joking, had been laughing, had been running, had been lying, had been hanging, had bren burning, had been keeping, had been playing, had been looking, had been singing, had been dancing, had been swiming, had been lying in the sun.

Was/ were busy, was/were hungry, was/ were happy, was/were right, was/were wrong, was/were sure, was/were born