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 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

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