27. (a - Where; b - Why; c - Who) wrote that letter? 28. This book is (a - us; b - our; c- ours). 29. We'll finish our lesson and (a -then; b - than; c -therefore;) we'll have a…

27. (a - Where; b - Why; c - Who) wrote that letter? 28. This book is (a - us; b - our; c- ours). 29. We'll finish our lesson and (a -then; b - than; c -therefore;) we'll have a break. 30. What's the matter (a - by; b - on; c - with) you? 31. Don't help her. She will do everything (a - myself; b - herself; c- himselj). 32. We are going to (a - ours; b- our; c - us) favourite shop. 33. It is much (a- cold; b - colder; c - more cold) today than it was yesterday. 34. He is not as old (a- that; b - than; c- as) I am. 35. Mary is (a - very; b - more; c- much) intelligent than Nick. 36. She is the (a - very bad; b - worst; c - worse) pupil in the class. 37. (a - Where; b - Why; c - Who) wrote that note? 38. They went home early (a - because; b - while; c- till) they had finished reading… 39. He drives (a - more quick; b - veryquickly; c - veryquick). 40. (a - How; b - Why; c - Where) is Jack? - Very well, thanks