精选优质文档-倾情为你奉上Unit 5 第二课时.单项填空1The fact _ a planet exists outside our solar system encourages the hope _ other solar systems exist.Athat; thatBwhich; thatCwhere; thatDwhether; what答案：A此句的主干是The fact encourages the hope.。空格处引导同位语从句，从句补充说明fact, hope的内容，空格处不在句中充当任何成分，故用that。2We hadnt settled the problem _ would be sent to take charge of that chain shop.AthatBwhoCwhenDwhich答案：Bwho引导同位语从句，该从句进一步解释problem的内容，who在从句中作主语。3
