He transplanted the young tree to the park ____   it was the best time for it .

A.where            B.when           C.what              D.that

He transplanted the young tree to the park ____  it was the best time for it .

1. A.
   where
2. B.
   when
3. C.
   what
4. D.
   that

He transplanted the young tree to the park ____   it was the best time for it .

A.where            B.when           C.what              D.that

He transplanted the young tree to the park ____   it was the best time for it．

A．where        B．when                 C．what          D．that

He transplanted the young tree to the park ____  it was the best time for it .