Question

--- 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

Answer 1

A

前空表示不确定的一个男孩；后空藏的地方为特指。