This design is satisfactory.So you’ll have to try your best to better it.A. nothing but B

问题补充：

This design is satisfactory.So you’ll have to try your best to better it.

A. nothing but

B. anything but

C. all but

D. everything but

答案：

A. nothing but

(答案→)B. anything but

C. all but

D. everything but

解析：短语辨析。A.只不过 B.根本不 C.差一点；几乎 D.除了...其余都....句意：这个设计根本不符合要求。因此你要尽力完善它。故选B。