What changes fast（）change fast.
举一反三
- 1.The cat runs fast. _____ ______ ______ fast?
- Liu Xiang runs! A: What fast boy B: What fast C: How fast D: How a fast
- _______he runs! A: What fast B: How fast C: How rapid D: What rapid
- The world is changing very fast; our plan must change ______.
- S1: make fast the tug forwardS2:copy that,make fast the tug forward.问题:what are they doing ?