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Potassium has a valence of positive one because it usually loses one electron when ___________ with other elements

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:

(A) Only after food has been (B) dried or canned (C) it should be stored for future (D) us

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Don’t make noise, children! Parents are ________

Trees won‟t grow ___________ there is enough water.

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–“Can I help you, sir?”–“I’m looking for a ___________ desk for my son.”

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions:

 A nuclear power plant emits less radiation than a granite structure of similar proportion, such as the Lincoln Memorial. “Emits” means     .

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Did the mountains ……………... far below?

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She’d save money if she bought that old jeans, _____?

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Be sure to _______ a real effortto answer all the questions the interviewer asks you.

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He needs to do the homework before going out with his friends, ____?

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I’m very disappointed in you. I didn’t think you were the sort of person who would go _______ his word

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If you are trying toget 100 musicians to play your symphony, you had better have your _______ in a row before you walk into the hall with an armload of scores

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Because of the coming examination, I am under a lot of study _____________

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Jane has got such a ____________ headache that she can’t concentrate on the lecture. She has a permit to stay home until she’s healthy

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The expert says progress and economical development depend on educating children

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We had a________football match with the neighbouring school yesterday.

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If the work-force respected you, you wouldn't need to ______ your authority so often

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions: 

Higher education is very (A) importance to national (B) economies, and it is also a source of framed and (C) educated personnel (D) for the whole country.

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Chuseok is one of __________ celebrations in the Korean calendar when Koreans give thanks to nature

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They are going to declare details of the plan to the public later this week

Choose the letter A, B, C or D to complete the sentence. "A lightning-fast 30-degree bow is _____ for friends"