题目内容
（请给出正确答案）
__________ had I closed the door__________ somebody started knocking on it．
A.As soon as；then
B.Although；yet
C.No sooner；than
D.If；then
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更多“__________ had I closed the do…”相关的问题
A.饱和氯水中：Cl﹣、NO3﹣、Na+、SO32﹣
B.（OH-）=1.0mol•L﹣1溶液中：ClO﹣、K+、SO42﹣、Br﹣
C.Na2S溶液中：SO42﹣、K+、Cl﹣、Cu2+
D.pH=12的溶液中：NO3﹣、I﹣、Na+、Al3+
I would have come to see you had it been possible，but I had been so busy then.
A B C D
Yesterday I was caught in the rain, and had to look for the ______ of a tree.
A．shadow
B．shelter
C．bush
D．shade
As I was just getting familiar with this job, I had ______to ask my boss.
A．many
B．most
C．more
D．much
______had I reached school than the bell rang.
A．No sooner
B．Only
C．Hardly
D．Rarely
______ when the phone rang.
A．Scarcely I had walked in the door
B．Scarcely had I walked in the door
C．I had walked scarcely in the door
D．I had walked in the door scarcely
I had no ______of who I was or what I was going to be.
A. mind
B. idea
C. think
D. thought
Only when I began to do it ______ that I had made a mistake.
A．I realized
B．I had realized
C．did I realize
D．would I realize
