单项选择题

I would have come sooner but I ______ that you were waiting.

A．haven't known
B．hadn't known
C．didn't know
D．have known
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单项选择题
What is this passage mainly about
A．How much money you should deposit in a bank.
B．What identification you should provide to open an account.
C．What you should do when you study in America.
D．How you can open a checking account.
单项选择题
______ fails to see this will make a big mistake.
A．Whoever
B．Whatever
C．Anyone
D．Who
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