On January 5th, students in our school visited Robot World, in (加一个in，光有which指代不通，或者直接将which改成一个词where也是可以的) which we saw a great diversity of robots (复数，a great diversity是很多种类的意思，robot又可数). It was amazing (I am amazed; a thing is amazing. Amazed是使着迷的意思，而amazing是令人着迷的) to find that (加一个that更通顺) those robots could do a great numb...
