21 They will be in the meeting before/until three o'clock.
22 You must be back by/until nine o'clock tonight.
23 They opened the window to/for let in some fresh air.
24 It started to rain as/during they were walking home.
25 They spoke quietly so as not to/in case disturb us.
26 Check your work carefully before/ago you hand it in.
27 She is training a lot so as to/so that she can win the
competition.
28 We went to the cafe to/for a cup of coffee.
29 I can't go out as long as/unless I ask my mum first.
30 I'll make dinner providing/supposing you do the
washing-up.
R e w r i t e t h e s e n t e n c e s u s i n g t h e w o r d ( s ) i n b r a c k e t s . 31 She got up early because it was a beautiful day.
(since) 32 Were I you, I would ask for some help, (if) 33 She laughed because the joke was funny, (as) 34 He was shy and, as a result, he didn't make friends
easily, (as) 35 If you don't call me, I'll get the bus home, (unless) 36 It was very cold, so they stayed indoors, (because) 37 He was late, therefore he didn't have time for break-
fast, (the reason why) 38 He couldn't go to work because he was ill. (due to) 39 Had he not been late, he would have heard the
news, (if) 40 She was tired, so she went to bed early, (the reason for) | 204
Progress Test 5 (Units 9-10) C h o o s e t h e c o r r e c t a n s w e r . 1 She him that she would be late.
A tells B said C told