Unit 6 Work quietly 第一课时一、 Choose the correct answers( ) 1. d__ __ng A. oi B oe C ua( ) 2.h__ v__ng A e a Ba,e C a,i( ) 3. __ __t __ng A .ai, e B ea, i C aa,a ( ) 4.r__ __ding A oi B ae C ea( ) 5.l__ st__ng A a,e B e,e C i,e二 、Translate the phrases have ......