用所给词的正确形式填空。

小题1:The bag is __________(light) than that one.

小题2:I’m sorry to say that there’s nothing ________(eat).

小题3:When I visited them at 7 o’clock yesterday, they _____________(chat) by the fire.

小题4:There are many boys _________(play) on the playground.

小题5:We must send a letter to her. A letter must _________(send) to her.

小题6:What you said makes me __________(confuse)

小题7:He needs _________(spend) time with friends.

小题8:An ad can lead you _________(buy) something you don’t need.

小题9:She ______________(live) here since three years ago.

小题10:____________(receive) money makes me uncomfortable.

发动机液压挺柱因为能自动补偿气门间隙，所以不再需要人工调整气门间隙。