Question

When I was a child I used ________ swimming in the lake.

A.to going
B.going
C.to go
D.go

Answer 1

【答案】：C

Used to do sth过去常常做某事，be used to doing sth习惯于做某事。选项C是正确的。【句子大意】我小的时候常去河里游泳。