Mr. Fox fell ill, thus __________ it necessary for us to find another person for his job.

A．having made

B．made

C．making

D．to make

有一牧场养羊和鸡，已知羊和鸡一共有370只，1200条腿，请问羊和鸡各有多少( )

A．250只，120只

B．300只，70只

C．230只，140只

D．210只，160只