②wasitduringthesecondworldwar_____hedied?（'88）
a.that
b.while
c.inwhich
d.then
③itwasabout600yearsago_____thefirstclockwithafaceandanhourhandwasmade.（'97）
a.that
b.until
c.before
d.when
④itwasonlywhenirereadhispoemsrecently_____ibegantoareciatetheirbeauty.（'98）
a.until
b.that
c.then
d.so
分析："itis（was）＋被强调成份＋that（who）＋其它成份"结构可以强调除谓语动词以外的任何句子成份。假如被强调成份是人时，可用连词that或who，假如被强调成份是物时，只能用连词that。所以上述考题的答案是：aaab。
2.对not…until…结构的强调
①itwasnot____shetookoffherdarkglaes___irealizedshewasafamousfilmstar.（'92）
a.whethat
b.until;that
c.until;when
d.whewhen
②itwasnotuntil1920_______regularradiobroadcastegan.（'95）
a.while
b.which
c.that
d.since
③notuntilallthefishdiedintheriver_______howseriousthepollutionwas.（'95）
a.didthevillagersrealize
b.thevillagersrealized
c.thevillagersdidrealize
d.didn'tthevillagersrealize
④notuntilibegantowork____howmuchtimeihadwasted.（'90）
a.didn'tirealize
b.didirealize
c.ididn'trealize
d.irealize