(A)1.It's________to stick your chopsticks into your food.

A£®rude¡¡¡¡B£®clever¡¡¡¡C£®strange¡¡D£®polite

(B)2.Don't point ________ anyone ________ your chopsticks.It's not polite.

A£®at£»by  B£®at£»with

C£®to£»by  D£®out£»with

(A)3.Please tell me ________ next.

A£®how to do it  B£®what to do it

C£®how to do  D£®what do it

(A)4.It is common that students ________ greet the teachers when classes begin in China.

A£®are supposed to  B£®are suppose to

C£®suppose to  D£®suppose