Let's __________ one by one. ( )
A. walk B. walking C. walked D. to walk
【答案】A
【解析】Let’s...为祈使句后加动词原形，故选A。
题目：Let's __________ one by one. ( )
关键字：
Let's __________ one by one. ( )
A. walk B. walking C. walked D. to walk
【答案】A
【解析】Let’s...为祈使句后加动词原形，故选A。