work hard and...
 【问】 Come early and you will see him.请解释句中and的含义和用法。
 【答】 祈使句后面接带连词and的分句时，祈使句具有条件句的含义。
 1. Make a move and I'll shoot. (=If you make a move，I'll shoot.)(CGEL)
 动一动我就开枪。
 2. Push the door hard，and it will open.(=If you push the door hard，it will open. )
 使劲推，门就会打开。
 3. Finish your work and I'll give you some ice cream. (If you finish your work，I'll giveyou some ice cream.)
 你干完活，我就给你些冰琪淋。
 4. Go and I won't call the police.
 走开，否则我叫警察了。
 但是这种句型在书面英语中比较少见，主要用于口语中。
 有时候，and可以省略。
 1. Do it at once.you will never forget it.
 你如果马上做，就再也不会忘了它。
 2. Love me，love my dog.
 爱屋及乌。
 请做下面的英语试题：
 “I didn't pass the monthly exam.” “_________next time，and you will succeed. ”
 A. Work hard B. To work hard
 C. Working hard D. Hard-working(TOEFL，73. 6)
 (参见try and，and23)