let居然还有ing的用法？

haoqianruhaos

For centuries, people on sea voyages washed their clothes by placing the dirty laundry in a strong cloth bag, then toss it overboard, and let the ship drag the bag for hours.

A.then toss it overboard, and let

B.then toss them overboard, and they let

C.tossing it overboard, and letting

D.tossing them overboard, and let
E.tossing it overboard, and let

答案是D，可是从来没讲过let有这样的用法，虽然是平行。。。l

NN们~~

saracarter

by letting有什么错么?

I warmed the house by letting the heat on

我开着暖气让屋子暖和.

nadou1

学习下了










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778879147

答案是C

haoqianruhaos

是prep语法笔记里的一套题，呵呵

sealg

这个....应该是为了凑几个ING的平行然后凑出来的错误答案把.....?