1. and 2. or 3. to 4. than 5. at 6. on 7. does 8. so 9. are 10. however
30
31. who 32. until 33. in 34. is 35. it 36. the 37. up 37. gets 38. your 39. out 40. a
9
1 what 2 / 3 will have been set up 4 tourists/visitors/travelers 5 permitting 6 other 7 in 8 All 9 so/thus/therefore 10 under
10
1 living 2 languages 3 or 4 all 5 Before 6 bigger 7 written 8 a 9 up 10 most
11
1 the 2 defeating 3 for 4 After 5 they 6 on 7 where 8 before 9 best 10 failed
12
1 because 2 and 3 work 4 dangerous 5 too 6 Have 7 the 8 with 9 second 10 there
13
1 A 2 useful 3 and 4 in 5 they 6 if 7 It 8 which 9 friends 10 meeting
14
1 cities 2 every/each 3 an 4 have used 5 Besides 6 who 7 in 8 polluted 9 importance 10 if
15
1 to win 2 After 3 record 4 but (also) 5 wonderfully 6 an 7 all 8 can 9 But 10 what
16
1 it 2 was given 3 ages 4 no 5 how 6 a 7 than 8 especially 9 with 10 more
17
1 depends 2 which 3 the 4 less 5 It 6 should 7 strength 8 without 9 neither 10 suggested
18
1 in 2 are considered 3 if/whether 4 by 5 which 6 to 7 many 8 the 9 result 10 ourselves
19
1 broke 2 to be killed 3 no 4 cause 5 experienced 6 whether/if 7 of 8 To 9 telling 10 other
20
1 the 2 whether/if 3 at 4 sat 5 them 6 though/although 7 Concerned 8 could/should 9 for 10 lessons
21
1 a 2 after 3 don’t 4 why 5 spend 6 where 7 nutritious 8 everyone/everybody 9 against 10 opening
22
1 as 2 look 3 oxygen 4 There 5 that/which 6 among 7 must/should 8 jumping 9 if 10 it
23
1 reported 2 richest/wealthiest 3 by 4 when 5 by 6 However 7 younger 8 Both 9 acting 10 the
24
1 An 2 without 3 wife 4 when/while 5 too 6 was painting 7 after 8 Both 9 nothing 10 angrily
25
1 from 2 strangers 3 Instead 4 that/which 5 including 6 and 7 regularly 8 answers 9 others 10 training
26
1 problems 2 that/which 3 annoyed 4 and 5 It 6 how 7 a 8 happiness 9 grows 10 in
27
1 important 2 that 3 of 4 yourself 5 Successful 6 like 7 where 8 setting 9 they 10 the
28
29
31. who/that 32. it 33. than 34. that 35. on 36. to get 37. So 38. closed 39. from 40. his/the
8
31. who 32. her 33. was 34. off 35. a 36. Whenever 37. she 38. contributions 39. care 40. although
7
1. stolen 2. at 3. to 4. amazement 5. and 6. hospital 7. for 8. the 9. been 10. another
6
6.help 7.was chosen 8.later 9.what 10.were treated
5
10. was sent因send与I是被动关系，且是到此之前领导派我来的。
4
Keys：1.worse 2.how 3.families her 5.if
9.politely 修饰动词waited用副词，在形容词后加ly。
8. while 由后面的waited可知，进来时David还在打电话，所以用while。
7. who 定语从句，先行词是人someone，且在定语从句中作主语，用who。