请帮我做几道英语题,说明一下理由
问题描述：
请帮我做几道英语题,说明一下理由
7.the young people lived and worked()the
worker
A.betweenB.among
C.in D.at
8.jack began to do his homework as soon as be
( )home
A.came to B.reached
C.arrived at D.got to
9.they ( )the Great Wall yesterday ,and this istheir first( )the Great Wall
A.visited,visit B.visit ,visit
C.visit,visit to D.visited,visit to
答
B,B,D(后者是名词the visit to someplace)