单项选择题

In each of the following groups of words，there is one underlined part with a different sound.You are required to pick it out（）

A.ghost
B.enough
C.laugh
D.tough

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In each of the following groups of words，there is one u...

单项选择题In each of the following groups of words，there is one underlined part with a different sound.You are required to pick it out（）

A.spread
B.steady
C.steal
D.threaten

In each of the following groups of words，there is one u...

单项选择题In each of the following groups of words，there is one underlined part with a different sound.You are required to pick it out（）

A.exercise
B.except
C.taxi
D.exact