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一、单项选择
1. Yesterday ______ 8-year-old boy fell into the river. ______ boy was saved by a policeman.
A. an; A B. an; The C. a; The D. a; An
2. In the past twenty years, many tall buildings have been built in our city. Look! This is a
________ .
A. 70-floor building B. 70-floors building
C. 70-floor buildings D. 70 floors building
1. Yesterday ______ 8-year-old boy fell into the river. ______ boy was saved by a policeman.
A. an; A B. an; The C. a; The D. a; An
2. In the past twenty years, many tall buildings have been built in our city. Look! This is a
________ .
A. 70-floor building B. 70-floors building
C. 70-floor buildings D. 70 floors building
