问题
选择题
Each time invited to a dinner,she always refuses, ____she has to take care of her baby.
A．to say
B．saying
C．says
D．having said
答案
B
考查非谓语动词。根据句意，主语she与say之间构成主谓关系，表示伴随的动作，所以用现在分词。
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