I will go to the science palace to morrow it doesn’t rain heavily.
A. as if
B. in case
C. even if
D. so long as
网友回答
A. as if
B. in case
C. even if
(答案→)D. so long as
解析：句意为：只要雨下得不是很大，我一定去科学宫的。as/so long as 用作连词，意为“只要”，引导条件状语从句。as if 好像；in case 以防；even if即使。