34. There are puddles on the ground outside. It ____________ last night.
(A) must have rained
(B) has rained
(C) should have rained
(D) may rain

30. Robert Burns, who wrote over 300 songs in Scots, a northern dialect of English spoken by Scottish peasants, also collected Scottish folk songs for a(n) ____________ called the Scots Musical Museum. (A) anthology (B) anthropology (C) literature (D) autobiography

31. The five-year-old child was tired after a long walk with his father in the mountains and asked his father for a __________. But his father was exhausted, too. (A) piggyback (B) hunchback (C) feedback (D) horseback

32. One year ago, he was ____________ by a spirit and from then on he acted and spoke strangely. However, the villagers who thought he was out of his mind at first were surprised to find him able to foretell the future. (A) obsessed (B) haunted (C) obliged (D) possessed

33. Exposure of children to abuse toward women by their partners fosters the development of emotional problems in the children. These children grow up ashamed of the situation at home, thinking it is a family secret, which _________ keeps them from seeking help. (A) in turn (B) all in all (C) by contrast (D) in return

35. By ___________ satellite transmitters in migrating birds, scientists are able to track a number of them. Their results show that some species can fly thousands of miles nonstop on their migrations. (A) implanting (B) embedding (C) transplanting (D) incising

36. A woman was found dead at a ditch. Unfortunately, the scene at the ditch was contaminated by some of the first responders, limiting the amount of forensic evidence that could be retrieved. Furthermore, ____________ occurred, which made it very difficult for investigators to take fingerprints or any other kind of forensic evidence. (A) erosion (B) evolution (C) decomposition (D) rustiness

37. If someone goes bananas, it means that he becomes very ___________. (A) worried (B) angry (C) happy (D) frustrated

38. The teacher’s rigid and boring teaching methods only serve to _____________ kids’ creativity. (A) quench (B) squelch (C) explore (D) escort

39. English teachers should not ask every student to produce the same amount of words or sentences for a topic. As we all know, students’ levels ____________ a lot. It is meaningless to require a student of poor proficiency to write as much as those of high proficiency. (A) differentiate (B) diversify (C) defy (D) vary

40. In the movie The Bridges of Madison County, the director takes time to weave a melancholic impact upon the viewers who, ___________, moved by the subtle and delicate emotional changes of a plain housewife and the romantic tone created with music, candlelight, tight embraces, and understanding talks and smiles between her and the photographer, believe this is true love in middle-age. (A) little by little (B) day by day (C) out of the blue (D) out of thin air