A.that | B.when | C.where | D.which |
A.which to be based on | B.which to base on |
C.on which to base | D.which to base |
A.which I think is | B.which I think it is |
C.which I think it | D.I think it is |
A.where | B.when | C.that | D.whose |
A.what; which | B.that; that | C.when; that | D.which; what |
A.how | B.that | C.what | D.which |
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