The freezing point is the temperature __________ water changes into ice.

The freezing point is the temperature __________ water changes into ice.

A．atwhich           B．when             C．inwhich           D．ofwhich

The freezing point is the temperature __________ water changes into ice.

A. at which　 B. on that 　　　　C. in which 　　　 D. of what

The freezing point is the temperature __________ water changes into ice.

1. A.
   atwhich
2. B.
   when
3. C.
   inwhich
4. D.
   ofwhich

The ________ point of water is 0℃.

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