"It's really very kind ______ you to help me with the housework on Sundays," said Grandma Huang.
A、
of
B、
with
C、
for
D、
from
【正确答案】
A
【答案解析】
考查介词的用法。表示真心地感谢他人的帮助时，可用“It's very kind of sb. to...”，故选A。
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