问题
选择题
Their teachers are very ______ to them.
A .difficult B. boring C. friendly
答案
答案：C
be friendly to sb表示对某人非常友好。其中friendly是形容词。
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Their teachers are very ______ to them.
A .difficult B. boring C. friendly
答案：C
be friendly to sb表示对某人非常友好。其中friendly是形容词。