他经常谈论的这个事实对我们毫无用处。(定语从句)

　　Ⅰ.根据语境用恰当的引导词填空

　　1．It worried her a bit________her hair was turning gray.

　　2．I have no idea________we can do with these waste materials.

　　3．________the doctor really doubts is________my mother will recover from the serious disease soon.

　　4．It is hoped ________nature will never be destroyed.

　　5．-I drove to Zhuhai for the air show last week.

　　-Is that ________you had a few days off?

　　6．There can be little doubt________this kind of class can help the gifted children to graduate earlier.

　　7．I have some doubt________she will come on time.

　　【答案】　1.that　2.what　3.What；whether

　　4．that　5.why　6.that　7.whether

　　Ⅱ.下列的句子哪些是定语从句，哪些是同位语从句？

　　(1)The question whether the Prime Minister should resign must be decided soon.

　　(2)The plane that has just taken off is for London.

　　(3)The fact that he has already died is quite clear.

　　(4)The problem that we are facing now is how to get money.

　　(5)The question who should do the work is being discussed at the meeting.

　　(6)I have no idea how I can get to the railway station.

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　　【答案】　同位语从句是(1)(3)(5)(6)，定语从句是(2)(4)