Which of the following interpretations of the biologists' theory about melatonin is INCORRECT？
A. The production of melatonin in our bodies varies at different times.
B. Melatonin is more likely to cause sleepiness in our bodies.
C. The reduction of melatonin will cause wakefulness in our bodies.
D. The amount of melatonin remains constant in our bodies.
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In the sentence "The manager interviewed Jim himself in the morning", the italicized work
A. the object
B. the verb
C. the subject
D. the prepositional phrase
John is up to his eyes in work at the moment. The underlined word means______.
A. very excited
B. very busy
C. very tired
D. very efficient
When you have finished with the book, don't forget to return to Tim, ______？
A. won't you
B. don't you
C. will you
D. do you
Which of the following is LEAST likely to be included in family spring cleaning？
A. Beating the rugs.
B. Cleaning the window.
Cleaning the backyard.
D. Restoring Wi-Fi services.
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