() the bad weather,the swimming match had been put off.

问题描述:

() the bad weather,the swimming match had been put off.
A.Because B.Thanks to C.With the help of D.For
书上答案选D,可是for不是不能用字啊句首吗?搞不懂

for在句首时表示原因,其实这句话可以这样写:The swimming match had been put off for the bad weather.
for提前为了强调.