--- My son is lost. Did you see a boy pass by here?
--- I saw ______ boy hidden behind ______ tree over there. You may go and have a look.
A.a; the | B.不填;the | C.a; 不填 | D.a; a |
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--- My son is lost. Did you see a boy pass by here?
--- I saw ______ boy hidden behind ______ tree over there. You may go and have a look.
A.a; the | B.不填;the | C.a; 不填 | D.a; a |