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lay a peasant boy laid a peasant boy a peasant lay did a peasant boy lie
in front of; in front of in the front of;in the front of i
is sitting a boy sat a boy a boy sat a boy is sitting
A, a The, a The, the A, the
in front of in the front of at the left on front of
lay a peasant boy laid a peasant boy lie a peasant boy did a peasant boy lie
lay a peasant boy laid a peasant boy a peasant lay did a peasant boy lie
fell down fell over fell back (回去) fell apart (不成功)
an, A, a an, The, a a, The, the a, An, the
at the back of behind in front of in the front of
at the back of behind in front of in the front of
an; a an; the a; the a; an
in front of in front the of in the front of front of
a boy lay laid a boy lay a boy did a boy lie
an;A. an; The a; the a; An
behind beside in front of in the front of
behind beside in front of in the front of