4. Thanks for your invitation, but I’m so sorry I can’t go. I need to______ my sister at home.
A. take away B. take off C. take care of D. take out of
【解析】选C。考查短语辨析。take away“带走, 拿走”; take off“起飞, 脱下”; take care of“照顾, 照料”; take out of“取出, 将……带出”。由句意“我需要在家照顾我的妹妹。”可知选C。
