Exercise 3: Find the one mistake (A, B, C or D) in these sentences and then correct them: 1/ Does that book (A) tell (B) a story (C) of his life from (D) A to Z? 2/ Discovering (A) a therapy (B) for cancer is (C) one of (D) biggest challenges facing medical researchers. 3/ We think it's not (A) one good idea to spend many hours at (B) the wheel (= driving (C) a vehicle) without (D) a break. 4/ Do you agree that (A) an apple (B) a day keeps (C) a doctor (D) away? 5/ As (A) often as not when he (B) makes (C) an effort to visit his friend, he wonders (D) why he’s even worried. 6/ Satellite technology offers (A) the chance, as (B) ever before, (C) for continuous television coverage (D) of major international events. 7/ Every so (A) often he treats (B) him to (C) a meal in (D) a luxurious restaurant. 8/ (A) Sometime I take food (B) with me and (C) sometimes I buy food (D) when I’m there. 9/ (A) Seldom they receive (B) any apology when (C) mistakes (D) are made. 10/ (A) Hard had (B) a moment passed (C) before (D) the door creaked open. Exercise 4: Supply the correct form of the word in brackets: 1/ We are concerned with the physical and (psychology) _______ well-being of our employees. 2/ I'm trying to be more (adventure) _______ with my cooking. 3/ My most (embarrass) _______ moment was trying to introduce a woman whose name I couldn't remember. 4/ The prime minister denied that the new visa requirements were part of a (hide) _______ agenda to reduce immigration. 5/ We spent a (luxury) _______ weekend at a country hotel. 6/ (Tragic) _______, the side-effects of the drug were not discovered until many people had been seriously damaged by it. 7/ There is possibly less chance of another World War while the last one is within (live) _______ memory. 8/ Please give (generous) _______ to Children in Need. 9/ Paul's always very (smart) _______ dressed. 10/ The (discover) _______ of a body in the undergrowth started a murder enquiry. Exercise 5: Fill in each gap with the most suitable preposition: 1/ They work _______ the night and sleep _______ day. 2/ They live _______ that old farmhouse _______ the hill. 3/ I've been _______ this job _______ thirty years, and I've picked _______ a good deal _______ expertise _______ the way. 4/ The improvement has been _______ the board, _______ all divisions either increasing profits _______ reducing losses. 5/ Her name comes _______ mine _______ the list. 6/ _______ AD 79 the city _______ Pompei was buried _______ a layer _______ ash seven metres deep. 7/ He's been _______ the department (= working _______ it) _______ 1982. 8/ She's _______ _______ the office _______ a few days next week. 9/ I felt frightened _______ the anger _______ his voice. 10/ _______ the top _______ the tower you could see _______ miles _______ the city.