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單項(xiàng)選擇題It is（）that he has to ask for help.

A.so a big job
B.a so big job
C.a such big job
D.such a big job

1.單項(xiàng)選擇題They are（）students that they all performed well in the nationwide examinations.

A.so diligent
B.such diligent
C.so much diligent
D.such very diligent

2.單項(xiàng)選擇題Once he starts a job, he won't stop（）it is finished.

A.till
B.after
C.before
D.until

3.單項(xiàng)選擇題（）you told me, I had heard nothing of what happened.

A.Not
B.After
C.Till
D.Until

4.單項(xiàng)選擇題The president claimed the terrorists should be held responsible（）the explosions that happened last month in London.

A.for
B.on
C.at
D.about

5.單項(xiàng)選擇題His parents will be（）him if he fails the examination.

A.disappointing with
B.disappointed on
C.disappointed with
D.disappointing for