A.Do you know it is where that | B.where is it that do you know |
C.Do you know where it is that | D.where do you know it is that |
A.when;it were | B.until;/ |
C.as;there was | D.before;it was |
A.why we learn it hard | B.that we learn it hard |
C.which we must learn | D.when we should learn |
A.were moving | B.did move |
C.had moved | D.would move |
A.that | B.which | C.when | D.why |
A.why it does | B.what it does | C.what it is | D.why it is |
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