______ you work harder, you will fail the exam. [ ]A. Until B. If C. Unless

题型：月考题难度：来源：

______ you work harder, you will fail the exam. [ ]
A. Until
B. If
C. Unless
D. Because

答案

举一反三

You"ll fail the test ______ you work hard.

[ ]

A. if
B. since
C. unless
D. when

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Mingming will look after the pet dog for me ______ we"re away. [ ]
A. while
B. during
C. since
D. till

题型：河北省模拟题难度：| 查看答案

He was ______ tired ______ he fell asleep as soon as he lay down. [ ]
A. too; to
B. so; that
C. such; that
D. enough; that

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You"d better do it _____ your mother did. [ ]
A. when
B. as
C. like
D. because

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The temperature of our earth will become higher and higher _____ we take actions right now.

[ ]

A. unless
B. if
C. as soon as
D. as

题型：河北省模拟题难度：| 查看答案