Проще говоря, нужно выбрать - present continious или present simple. еще желательно бы уточнить, почему. 1. i sleep/'m sleeping on nick's sofa until i find a place of my own. 2. i only work/'m working there for a couple of months - i'm going to abroad in the summer. 3. if you don't listen/aren't listening to the radio, why don't you switch it off? 4. there's nobody at the door. you just hear/are hearing things.

1. i sleep on nick's sofa until i find a place of my own. 2. i only work there for a couple of months - i'm going to abroad in the summer. 3. if you aren't listening to the radio, why don't you switch it off? 4. there's nobody at the door. you just hear things.1) "я сплю" какое-то время, без уточнения временных рамок, просто "пока не найду собственное место"2) "я там работаю пару месяцев" - каждый день, обычное рутинное действие.3) "ты не слушаешь радио" - сейчас, в данный момент, поэтому здесь время present continuous.4) как подсказали ниже, "hear" обычно не употребляется в форме времени present  continuous, как глагол восприятия.

1)  the national emblem of modern russia is a golden two-headed eagle in dark red (red) background.2) it may be an animal - kangaroo3)symbol of black magic and fertility. 4) the star-spangled banner (is the official state symbol of the usa5) rose - a national symbol of england6)flag of canada   is one of the state symbols of the country. it is a rectangular cloth of red color with a white square in the middle, which is depicted odinnadtsatikonechny red maple leaf. 7) 1   god save our gracious queen! long live our noble queen! god save the queen! send her victorious,happy and glorious,long to reign over us: god save the queen. 2   o lord, our god, arise,scatter her enemies,and make them fall: confound their politics,frustrate their knavish tricks,on thee our hopes we fix: god save us all 3   thy choicest gifts in store,on her be pleased to pour; long may she reign: may she defend our laws,and ever give us causeto sing with heart and voicegod save the queen!

1) the curtains opened and we saw 8) beautiful c) scenery on the stage. 2) nowadays people seldom 1) receive e) letters, but they send e-mails a lot. 3) i have never liked 4) cruel f) characters in books,i have always tried to have nothing to do with cruel people in life. 4) there was some 6) red b) blood on the boy`s finger. 5) we seldom sit in the stalls,we have no money for 7) eхpensive a) seats. 6) john 5) was h) thrilled by the idea. 7) william shakespeare 2) devoted d) himself to acting and writing plays. 8) they have always 3) produced g) wine in this area.