With no rain for three months and food supplies      _out, the situation here is getting from bad to worse.     [ ]

A. run                          

B. running

C. to run                        

D. to be run

模板机的技术性能一般为加工模板直径（）时最佳。

A、φ30mm～φ60mm

B、φ30mm～φ40mm

C、φ30mm～φ72mm

D、φ20mm～φ35mm