词汇与结构16.Since he left the university,he _____ in an accounti

词汇与结构
16.Since he left the university,he _____ in an accounting company.
　　A.has been working B.had worked
　　C.had been working D.was working
17.The weather in China is different from ____.
　　A.America B.in America C.that in America D.one in America
18.It was not until dawn _____ their way out of the forest.
A.when they found B.that they found
C.did they find D.that they didn’t find
19.____ he says or does won’t make me change my mind at all.
　　A.Whatever B However C.Which D.How
20.We all believe that it’d be hard for him to _____ extra responsibilities now.
　　A.take apart B.take up C.take on D.take back