---We all had a lot of fun at the barbecue yesterday. Pity you weren’t there.

---I really should have gone with you, but I ________ on some remaining problems.

A．was working

B．would work

C．worked

D．had worked

亚洲、北美洲分布最广的气候类型是（　　）

A．热带季风气候

B．温带季风气候

C．温带大陆性气候

D．地中海气候