选词填空（选词并用其适当形式填空）

选词填空（选词并用其适当形式填空）
purple promise hundred taxi monitor
小题1:We choose Daming as our class ________. He always helps us.
小题2:Betty ________ never to lie(撒谎) to me from now on.
小题3:Beihai Park is a little far from here. Let’s go there by________.
小题4:This kind old man is not rich but he helps ________ of poor children.
小题5:It’s too cold today. His lips(嘴唇) change into________ .