The sentence is said to appear in a textbook.
I feel this is a cleft sentence to emphasize 'them,' but then it's omitting 'who are' before the 'waiting,' but is this way of expression common?


Yes. While inserting a "who are" would still be proper, the form as it is is more common. The emphasis can be a slightly split if the sentence is referring to the opposite of the norm, which I can't tell from the current context.

An opposite situation: "Usually it's me flirting with the ladies, but since I got this sports car it's backwards."

A common situation: "As a priest, when people come to confession usually it's them doing all the talking to me."

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.