I could have offered you some help last weekend, but I _______ with my work at that time.

A．would be occupied

B．was occupying

C．had been occupied

D．was occupied

（）是诗人王维早期的一首咏史诗诗中赞颂了侯赢慷慨任侠之举也表达了诗人渴望有人赏识的心理和对建功立业的热望。