A
這是個常見的句型：
祈使句（動詞原形開頭,表條件） + or + 陳述句（一般用will + 動詞原形）
表否定,中間用or
Hurry up,or you 'll miss the train.
=If you don't hurry,you'll miss the train Work hard ,and you'll catch up with him.
如果表肯定
用
祈使句（動詞原形開頭,表條件） + and + 陳述句（一般用will + 動詞原形）
Work hard,and you'll catch up with him.
=If you work hard,you'll catch up with him