31. If you __________ a choice, which country will you visit? A. have B. had C. have had D. will have 32. Trees won't grow __________ there is enough water. A. if B. when C. unless D. as 33. An interesting feature in northern cuisine is in winter all family members gather around a big hotpot __________ there is a combination of seasoned broth, vegetables and meats. A. in which B. which C. what D. x 34. The patient could not recover unless he __________ an operation. A. had undergone B. would undergo C. underwent D. was undergoing 35. One special feature of cuisine in Southern Vietnam is short cooking time which aims to __________ the freshness of food. A. stay B. continue C. exist D. remain 36. Pumpkin soup is a good source of __________, minerals and vitamins, especially vitamin A. A. solids B.fibres C. sugars D. fats 37. If you __________to be chosen as a chef in that restaurant, you'll have to be experienced in the field. A. had wanted B. wanted C. want D. wants 38. You usually __________ into many small pieces. A. chop B. whisk C. grate D. sprinkle 39. If I had enough money, I __________ abroad to improve my English and try the local specialities. A. will go B. would go C. should go D. should have to go 40. Don't worry about lunch. I've bought __________ sandwiches. A. a lot B. some C. any D. much 41. Could you bring me __________ glass of lemonade, please? A. a B. some C. any D. many 42. They ground beans from the cacao or cocoa tree and mixed them __________ water and vanilla to make a drink. A. in B. to C. with D. into 43. When Africans started __________ cacao trees, they stopped fighting, so chocolate brought peace there. A. grow B. grows C. grew D. growing 44. If it rains tomorrow, we __________postpone going on a picnic. A. could B. may C. would D. had to 45. The tradition of taking different meats, and sometimes vegetables as well, and spearing them with a sharp stick called a skewer__________ cultural lines today. A. crossed B. has crossed C. crosses D. is crossing 46. The author __________ you criticized in your review has written a reply. A. where B. which C. whom D. when 47. Aid workers helped distribute corn, milk and other __________. A. ingredients B. items C. options D. staples 48. Boil the beans until they are __________. A. tender B. soft C. hard D. dry 49. He was driving at 50 miles __________ hour. A. x B. a C. the D. an 50. If you __________him, give him this note. A. to see B. will see C. see D. sees