The old man said the accident________careless driving, so a lot of money________be paid by the

driver. [ ]

A. was due to; was due to

B. due to; was due to

C. is due to; has due to  

D. is due to; was due to

烹饪的起源是以用火熟食为（）的。

A、目的

B、目标

C、标志

D、标准