Question

they kept us waiting (change passiv voice)​

Answer 1

The sentence can be changed into passive voice as :

We were kept waiting by them.

How to convert a statement into passive voice?

• Certain rules should be followed to convert an active voice statement into the passive voice.
• The subject of the active voice statement is made the object of the passive voice statement.
• Auxiliary verb (to be) is added in the same tense in which the active voice statement is in.
• When making a passive voice statement, the past participle form of the main verb is used always.
• The object of the active voice statement is made the subject of the passive voice statement.

Answer 2

Question. they kept us waiting (change passiv voice)

Answer. We were kept waiting by them.