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【題目】The doctors tried their best to save the patient’s life, _____ failed.

【題目】I study English, art, history and some _____ subjects.

【題目】You can see __ C , __A and __ N in the word “can” .

【題目】—How long can I keep the books?

【題目】—When I was seven, I played the piano very well.

【題目】___name is Tom. ___ is my brother.

【題目】Mr Yang usually goes to work ____.

【題目】Parents often ask their kids their Internet friends because it may be dangerous to do so.

【題目】—Why did you get up so early to work?

【題目】One of________ places for mountain climbing is the Himalayas.