通常海运集装箱有三种租赁形式，包括（）。

A．航次期租

B．定期租赁

C．程租

D．活期租赁

--- How is Dennis getting along with his work?

--- Well, he could always _______ a new idea for increasing sales.

A．come up with

B．come about

C．come on

D．come over