Question

They had been waiting since Monday find tense​

Answer 1

Answer:

PAST PERFECT CONTINUOUS TENSE

Explanation:

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Answer 2

Answer:

Past Perfect tense

Explanation:

As it rule says Subject+had+been+first form of verb+ing+object

Subject=They

have been

1 st form of verb=Wait

ing form=Waiting

Object= Monday

So,acoordingly it is past perfect tense