1.at the moment. this means at the time you or guests/visitors etc arrived at a place, there are no chairs. you are not very happy about having to stand for an hour. This type of sentence would be used. for example, if you were organising a party in a public hall, and the people responsible for supplying the chairs had let you down. You would say this, 'there aren't any chairs here at the moment' = they will come later. in the sentence, it is implied they will come in one hour. 2. need more context. down here implies that it is on a lower level, or on the floor, in a bottom drawer etc. Anywhere lower than the person you are speaking to. 3.take off. means will sell well, be very popular.

Lots of good questions here! 1) You would use "at the moment". It indicates that right now, something is or isn't true. In your example, the chair isn't there. Another more common use would be "I'm busy at the moment- can I call back later?" 2) This is a fun nuance of the English language. "Down" is an extra word in this sentence. The phrase "down here" just means the speaker is referring to a place he isn't familiar with. Example: If you lived in the northern part of the USA and I lived in the southern part and you called me and asked "Is it raining down there?", I would say "No, is it snowing up there?" 3) In this sentence "take off" means to gain popularity or begin to do well. I believe it's a shortening of the saying "take off running". It can also mean "leave" or in the context of work "have time off"

1. It is "at the moment" which means at the present time. Also, you should probably use "and" instead of "so" ion this sentence. 2. The sentence would still be correct if you omitted "down". It adds more information about the location. For example, if I usually work on the tenth floor of the building, but today I'm on the fourth floor, then the question "Have you got a timer down here?" is making it clearer that I am asking the question about this location down on this floor, not about "here" in the whole building. 3. "Take off" in this context means "to become popular". It is using the image of a rocket "taking off" or being launched, and so it is asking whether the popularity will rapidly go up.