一、1.D 2.C 3.A 4.E 5.B
二、1.A 2.D 3.C 4.B 5.C
三、1.Let's;we;playing;about;better
2.What;Why;idea;Let's; What;look;rain;we;Let's;
3.to put;it;with;not;Put
四、1.“Let's go to the park,shall we?”“OK.Let's go.”
2.“You look very tired.You'd better go to bed earlier.”“All right.Good night,Mum.”
3.“You'd better not play on the street.It's not safe./It's dan- gerous.”“Yes,sir.Thank you.”
4.“Where shall we meet?”“Let's meet outside the gate of the zoo.”“Good idea.See you later.”
5.“When you don't know the way,you'd better look it up in the map,or ask other people.”“OK,Dad.I remember.”