赞题库-背景图
单项选择题

We were talking on the phone when we were ______.

A．cut down
B．cut off
C．hung up
D．hung back
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热门试题

单项选择题A．yawlingB．yawningC．yawingD．yawping,

A．yawling
B．yawning
C．yawing
D．yawping,

单项选择题A．programB．programmableC．programmedD．programming

A．program
B．programmable
C．programmed
D．programming