单项选择题
Without computers，we ______ the tremendous medical advancement in the last few decades.
单项选择题 French is not his mother ______ but he can speak it excellently.
单项选择题 _______ the weather forecast it will rain heavily late this morning.
单项选择题 I don’t like to ask people for help as a rule but I wonder if you could______ me a favor.
