1) [?] tiger is 2) [?] animal which struggles to survive in 3) [?] modern world.

I can never understand 4) [?] US elections, because I'm not sure I know 5) [?] difference between 6) [?] Democrats and 7) [?] Republicans.

8) [?] article is 9) [?] structural part of speech used with 10) [?] nouns.

11) [?] Climate is one of 12) [?] many factors involved in changing 13) [?] farming methods.

She dreamt of 14) [?] future where she could spend more time painting.

15) [?] postman was late this morning.

She appears regularly on 16) [?] radio and on 17) [?] TV, but what she likes best is working in 18) [?] theatre.

My wife likes 19) [?] seaside, but I prefer 20) [?] mountains.

As 21) [?] teenager, Christopher Columbus went to 22) [?] sea, travelled extensively and eventually made 23) [?] Portugal his base.

They rejected 24) [?] unusual, 25) [?] impossible, 26) [?] incredible.

Lying by 27) [?] side of 28) [?] road we saw 29) [?] wheel of 30) [?] car.