Hebuiltatelescope____hecouldstudytheskiesinhisfreetime.
through which
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He talked about the men and books ____ interested him greatly in the school.
The speed ____ Tom drives his car is too high.
Washer is a machine ____ (用它我们洗衣服)or a person who is washing.
Nora:Howlonghasthisbookshopbeeninbusiness?
Michel:______1982.
Do you remember the building ____ flew a red flag all the year round ?