Question 38: What does the word "go dark" mean?
C. switch off lights
Question 39: According to the passage, which of these have gone dark for Earth Hour EXCEPT
C. The World Wide Fund for Nature (WWF)
Question 40: According to paragraph 3, how does Earth Hour help the planet?
C. It encourages people to take action to protect the environment.

Pronunciation Questions:
A. cucumber (The pronunciation of "cucumber" is different from the others.)
B. speeds (The vowel sound in "speeds" is different from the others.)

Stress Pattern Questions:
A. 'judo (The stress falls on the first syllable, different from the other options.)
A. 'image (The stress falls on the first syllable, different from the other options.)

Error Correction Questions:
A. is (The correct question tag should be doesn't he? instead of "is".)
B. wonderfully (The correct word should be wonderful instead of "wonderfully".)
A. to work (The correct verb form should be working instead of "to work".)
A. Because (The correct phrase is "Because the house was in bad condition, my father decided to sell it," no "so" needed.)

Multiple-Choice Questions:
C. because (The correct phrase is "because I'm always cold.")
C. look up (The correct phrase is "look up" to refer to finding information.)
B. to buy (The correct phrase is "where to buy" in this context.)
B. wouldn't be (The correct conditional phrase is "you wouldn't be late.")
C. truth (The correct answer is "truth" since it's a secret.)
D. mustn't (The correct phrase is "you mustn't let anyone know about it.")
A. Because (The correct conjunction is "because I play football with my friends.")
B. on (The correct preposition is "on" for locations on a map.)
B. can't (The correct phrase is "can't" in this context.)