I am not sure, if the sentence ""I knew that you are busy in a meeting" is correct. I think it is incorrect as it has past tense(knew) and present (are). pls. correct me

I would say: I woke up at 10 and it's been an hour since I woke up. it is an hour does not work, because it just states time (one hour) as an object. A form of to be is needed. See be: 1c) to remain or continue ⇒ "will he be here long?"

Sometime ago within the past few months, my Area 51 proposal for Etymology was closed unilaterally by a moderator, who believed the proposal a duplication. Here's a recreation motivated by the following recent epiphany. Would a universal etymology question differ and help? Today, fortuitously, t...

I've been solving a problem in my textbook, and my result is at odds with the textbook's: $$\sin\left(2\arcsin\left(\frac{1}{3}\right)\right)$$ My answer is $$\frac{4\sqrt{2}}{9}$$ I've used the double-angle identity for sine. $$\sin\left(2\arcsin\left(\frac{1}{3}\right)\right)=2\sin\left...

Firstly ___ at the turn of the century, the Minnesota State Capitol building is made of white granite and marble. Erected Was erected To erect it Erecting it I think 3 and 4 are incorrect and the answer should be 2 because the building was erected, but the solution is 1 Why? Secondly...

Honestly, this looks like someone just missed the word "take" it probably should read: It is rare in modern Russia for a public or political even to take place without the church present. In the ...

Example (short audio clip): And I stress this point because I will get programmers tell me that they're fine with one-dimensional arrays and maybe they get two, but beyond that they think it gets kind of weird and geeky and esoteric and maybe you need some kind of special mental clockwork to ...