I.单项选择。(20分)
1. -_______ do you help the old man with the housework?
-Once a week.
A. How soon B. How long C. How often D. How many
2. -80% students like soccer, what does 80% mean? -________.
A. No students B. All students C. Some students D. Most students
1. -_______ do you help the old man with the housework?
-Once a week.
A. How soon B. How long C. How often D. How many
2. -80% students like soccer, what does 80% mean? -________.
A. No students B. All students C. Some students D. Most students

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