看看这几题.感觉答案有错.
1.englishis______ausefullanguage______itisspokeninmanycountriesoftheworld.
a.so,thatb.such.that
c.so,becaused.such,because
答案是选的D.我选B.
2.hisbrotherhasworkedthere_____heleftschool.
a.whenb.afterc.sinced.because
答案是选的B,我选C.
3._________icameintotheoffice,theteacherwerehavingameeting.
a.
whileb.whenc.onced.since
答案选的是C.我选的是B.这个明显答案有错,