Ducks'largefeetthemquicklythroughthewater.A)usedtopushB)usedtopushingA)usedtopushB)usedtopushingC)areusedtopushD)areusedtopushing

Question

Ducks' large feet_____them quickly through the water.A)used to push B)used to pushing
A)used to push B)used to pushing C)are used to push D)are used to pushing

Answer 1

C
be used to do sth 被用来干某事