Theman ______coat is black is waiting at the gate
A. who’s
B. whose
C. that of
D. which.
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Thegirl ______ is reading under the tree _____my sister.
A. which;is
B. whom; was
C. who; is
D. who; was
Ilove places ______the people are really friendly.
A. that
B. which
C. where
D. who
普通房屋的设计使用年限为（）年。
A. 5
B. 25
C. 50
D. 100
钢筋与混凝土之间粘结力中起决定性作用的是（）。
A. 胶合力
B. 摩阻力
C. 机械咬合力
D. 侧向压力
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