选一下a b c d.

选一下a b c d. 帮我选一下a,b,c,d a.b.c.d.e各是几点,顺便说一下为啥? 帮我判断一下A,B,C,D. 选 a b c d 选A、B、C、D 选a,b,c,d, 选a.b.c.d. 选A B C D _____ is ____ hard work.A.study;a B.studies;a C.studying;a D.studying;/为什么选D不选C、讲解一下 What ______just now?A.was happened 　B.were happened　　C.happened 　　D.happens选C,请帮我分析一下, Why don't you come__________earlier?A、a little B、little C、more D、very (选词填空,希望说明一下) What is his head ().A ball. A.likes B.like C.look like D.liking选什么?请问一下为什么？ B选是a-(b-c+d)=a一b十c-d：￥：D选是a+b-(-c-d)=a+b+c+d A B C D A B C D （a+b)(c+d). [a,b)×[c,d