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)_____. 

(22).......... 

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Tommy had his big brother _________ his shoes for him.

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He will have to stay in hospital. That’s what he_____

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It is necessary that children_____ of their old parents.

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Our host family always invites my roommate and _______ to their house on Sundays.

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I can’t go because I haven’t got anything_______

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After _____the fight, the police arrested two men and a woman.

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While he was washing his new car, Mr. de Rosa_____ a small dent in the rear fender.

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If it__________ rain, we’ll have the party outside.

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Would you like something_______?

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 “I’m building a table”.

          “How far have you gotten_____ it?”.

a. to

b. for                        

c. along                       

d. on

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Suddenly everybody stopped_______ There was silence.

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They often suggest _______ out with some friends.

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 I believe there is somebody_____ on the door.

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I_____ all of the questions correctly since I began this grammar exercise on verb tenses.

My father __________ the hedge once a month.

Choose the letter A, B, C or D to complete the sentences:

He suggested _______ to France this summer time.

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Every_____ enjoyed the lesson.

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)_____. 
(21).........

Choose the best answer: 

May I have two ________ instead of beans, please?

 __________, computers are almost always correct.