The child _____ his mother carefully,but he couldn't ____ an
The child _____ his mother carefully,but he couldn't ____ an
He looked ____ the station,but couldn't see his friends anyw
____ his mother,the baby couldn't help laughing
the question was not very difficult,but he _____ couldn't an
The child isn't very smart,but his mother always
He tried ____(catch)the cat,but he couldn't
The child listens to his mother carefully.改为一般过去时
He doesn’t look like his mother.保持原句意思 They ____ _____ the s
the child couldn't __(run) to her mother
When the boy couldn't find his mother,he didn't know
He ____ the radio carefully,but he ____ nothing.
He _____(run after ……quickly) the thief but he couldn't catc