Choose the word (a, b, c, or d) that best fits each of the blank spaces. 
Computers are very (21)____, but they also can (22) _____ problems. One kind of problem is with the computer’s memory. It is not perfect, so (23) ____ computers lose (24)______information. Another problem is with the machinery. Computers are machines, and (25)_____can break down. When computers break down, they may erase information, like chalk on a blackboard. Or they may stop doing anything at all. And there is another different kind of problem with computers. Some doctors say they may be bad for your (26)_____. 

(23).......... 

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We often watch______ television.

Choose correct answer A, B, C or D to complete the sentence. If the sun shines, we ___________ to the beach

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He says he will pay; I don’t think he will, _______

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I don’t think he will ever get_______ the shock of his father’s death.

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I suggest _______ to the cinema for a change.

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The smallest flying dinosaurs _____ about the size of a robin.

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“What is this letter about?” “It’s in regard_______ at a conference next week”.

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I think he is unwell; he was complaining_______ a headache this morning.

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Two of the notebooks_________ Tom had lost on the bus were returned to the main desk at his dormitory.

Will we be able __________ into space in the future?

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Take the number 7 bus and get_______ at Forest Road.

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Have you planned on _______ to Nha Trang this summer?

____ a pet when you were young?

Choose correct answer A, B, C or D to complete the sentence. His computer makes a _______ low buzzing noise

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They can type. They_____ type.

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Bob is absent; he______ sick gain now.

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Bill came to work at the University thirty years__________

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She swam to the shore_____ the night in the water.

Choose correct answer A, B, C or D to complete the sentence. Digital cameras is a wonderful ___________

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Please pardon me for _______ you.