52. The cyclist ________ he crossed the main street.

a. looked with caution after

b. had looked cautiously before

c. was looked cautious when

d. has looked cautiously while

53. Nowhere in the northern section of the United States ________ for growing citrus crops.

a. the climate is suitable

b. where the climate is suitable

c. is the climate suitable (Đảo ngữ với Nowhere)

d. is there suitability of the climate

54. ________ is a belief generally held by people who live in colder climates.

a. That weather affects a person’s mood

b. Weather affects a person’s mood

c. A person’s mood is affected by weather

d. Although a person’s mood is, affected by weather

55. ________ he began to make friends more easily.

a. Having entered his new school, it was found that

b. After entering the new school

c. When he had been entering the new school.

d. Upon entering into the new school

52. B

53. C

54. A

55. B