Unless you work hard complete the sentence

1. You/ not pass/ coming exam/ unless/ work/hard . ........................................................................................................................................... 2. James Watt/ Scottish scientist/ invent/ steam engine. ........................................................................................................................................... 3. sometimes/ a country/ refuse/ take part/ the Olympics. ........................................................................................................................................... 4. I/apologise/him/not able/arrive/on time. ........................................................................................................................................... 5. Mars/ be /140 million miles/ know/ red planet. ........................................................................................................................................... 1. You won 't pass the coming exam unless you work hard. 2. JameWatt, a Scottish scientist, invented the steam engine. 3. Sometimes a country refuses to take part in the Olympics. 4. I apologize hime for being not able toarrive on time. 5. Marsis 140 miles and known to be red planet. (Sưu tầm - Tham khảo) Complete these sentences using the words given. Make all the changes and additions if necessary. 1. the last time/ I / play / soccer / in 2008 2. room / not / dirty / so/ they / not need / clean. ... 10. air/ we/ breathe/ be/ poll...

from We use the conjunction unless to mean ‘except if’. The clause which follows unless is a subordinate clause (sc): it needs a main clause (mc) to make a complete sentence. When unless comes before the main clause, we use a comma: Unless [SC] it rains, [MC] we’ll go for a picnic by the river tomorrow. (We’ll go for a picnic by the river tomorrow if it doesn’t rain.) When the main clause comes first, we don’t need a comma: [MC] They won’t come unless [SC] you invite them. Unless is a conditional word (like if), so we don’t use will or would in the subordinate clause: Unless I hear from you, I’ll see you at two o’clock. Not: Unless I’ll hear from you … Unless and if … not Unless and if … not both mean ‘except if’: We could eat at Siam Smile unless they’re closed on a Monday. (or We could eat at Siam Smile if they’re not closed on a Monday.) I’ll make dinner unless somebody else wants to. (or I’ll make dinner if nobody else wants to.) Can you turn the radio off unless you’re listening to it? (or Can you turn the radio off if you’re not listening to it?) We don’t use unless for things that we know to be true: You won’t be able to get a ticket for the match unless you’re prepared to pay a lot of money for it. (The speaker doesn’t know if you’re prepared to pay a lot of money for a ticket.) I don’t know what we would have done if we had n’t seen you. (We did see you.) Not: I don’t know what we would have done unless we’d seen you.