A. Cleaning
B. To clean
C.While cleaning
D. While I was cleaning
第1题
Outside my office window, there is fire _______ on the right.
A.ladder
B.escape
C.steps
D.stairs
第3题
Outside my office window, there is a fire _____ on the right.
A.ladder
B.escape
C.steps
D.stairs
第4题
Outside my office window, there is a fire ______ on the right.
A.ladder
B.escape
C.steps
D.stairs
第5题
Outside my office window there is a fire ______ on the right.
A.escape
B.ladder
C.steps
D.stairs
第6题
______ the window, my finger was cut unexpectedly.
A.Cleaning
B.To clean
C.While cleaning
D.While I was cleaning
第8题
Outside my office window there is a fire ______ on the right.
A.escape
B.ladder
C.steps
D.stairs
第9题
My grandfather would sit for hours on end staring out of the window at the mountains.
A.before nightfall
B.continued
C.without a break
D.outside
第10题
______ the window, my finger was cut unexpectedly.
A.It
B.As
C.That
D.What
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