单项选择题

The research is so designed that once ______nothing can be done to change it.

A．begins
B．having begun
C．beginning
D．begun
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单项选择题
My father often______ newspaper after supper.
A．sees
B．watches
C．reads
D．looks
单项选择题
—You haven't said a word about my new coat, Brenda. Do you like it —I'm sorry. I ______anything about it sooner. I certainly think it's pretty on you.
A．wasn't saying
B．don't say
C．won't say
D．didn't say
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