The mountain was______ many animals, such as wolves, foxes and rabits once haunted but now it is so silent.
A. that place
B. where
C. what
D. then
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The reason we're so late is______.
A. because of the car breaking down
B. due the care broke down
C. that the car broke down
D. because the car broke down
The reason she failed in the exam was______.
A. that she hadn't worked hard
B. because she hadn't worked hard
C. why she hadn't worked hard
D. because she was too careless
A hinge joint is______ permits the forward and backward movement of a door.
A. what
B. that
C. which
D. where
起跑时重心在哪？
A. 重心在身体靠前
B. 重心在身体靠后
C. 重心在身体中间
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