【介词+关系代词】He built a telescope ____ ____ he could study the s

【介词+关系代词】He built a telescope ____ ____ he could study the s 填介词+关系代词 He built a telescope ,_______ he could study the sk 填介词 He built a telescope ________ which he could study the s He built a telescope _____ he could study the stars "Galileo built a telescope through which he could study the He built a telescope ________ which he could study the skies he built a telescope through which he could study the skies. He made a telescope he could use to study the skies The scientist invented a telescope,_____he could study the s 2道介词填空1.He renewed the books so that he could keep them ____ (1)He ____(cut) the apple into ____(half) ____(介词）a drink. He ____ very hard in the ____(study).