No. Perhaps one of these will work for you:
"It is we who depend on them to do it."
(They're doing the work; we're relying on them to follow through.)
"It is us on whom they depend to do it."
(We're going to do the work; they're expecting us to do it.)
"It is we who question whether they will do it."
(They're supposed to do the work; we're not sure they will.)
No, because "let's" means "let us", and it does not make sense to say "let us join us." It would be correct to say, "Come on, let's join them." It would also be correct, if you are speaking to someone outside your group, to say, "Come on, join us."
It would be better to say: She gave approval for us to hold it'
These phrases are not correct or incorrect, they're expressions. Which you use would depend on what the people around you use. Someone I used to work with would often say, "by the by and by".
Why us. Eg. We wondered why it was us he chose.
Mary and we. If Mary was not involved you wouldn't say "us" (i.e. "us like to go shopping").
In most cases you would say you and I then again it depend on the question
Not too sure of your question. But correct or not will depend on the sentence. The battery is charged. = correct.
It could depend on what it is you are trying to say, but as it is it is grammatically correct.
No. But it would be correct to say. She joined us on April 10
People normally say "in the US" or "in the USA".
yes, but it does depend on how long and how many stairs.
Eyeing us is correct: for example, "They were eyeing us with suspicion."Note that for a similar-sounding verb, spying, it is correct to say spying on us.
No, because "let's" means "let us", and it does not make sense to say "let us join us." It would be correct to say, "Come on, let's join them." It would also be correct, if you are speaking to someone outside your group, to say, "Come on, join us."
It would be better to say: She gave approval for us to hold it'
"Both them and us were excited" is not correct usage. Look at how the pronouns would be used separately, then combine them in one, correct sentence. You would say "They were excited" not "Them were excited." Similarly, you would say "We were excited," not "Us were excited." The correct combination would be: "We and they were excited."
I think that is good for us
These phrases are not correct or incorrect, they're expressions. Which you use would depend on what the people around you use. Someone I used to work with would often say, "by the by and by".