In nature reserve, it’s ____ to hunt_____ fish there.

A．important, and

B．unable, but

C．incorrect, or

D．correct, or

— We'll have a hiking trip, but when shall we meet? 

— Let's make it            half past eight            the morning of June 1. [ ]

A. at; in

B. /; on

C. /; in

D. about; by