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【題目】I find ________ very important for students to study by themselves in school or at home.

【題目】—Let's go hiking ________ staying at home，shall we?

【題目】By the end of last month, I _____ all the CDs of Justin Bieber.

【題目】The story happened________April Fool’s Day.

【題目】More and more old people ______ good care of at Old People’s Home now.

【題目】She got up early ______ the early bus.

【題目】Many people are looking up to the sky. But they couldn’t find ______.

【題目】______ beautiful music! Many people like it.

【題目】There ______ more robots and computers to help do simple jobs in the future.

【題目】Leonardo Da Vinci, one of the greatest artists, was born ______ April 15, 1452.