请从下列各题的三个选项中，选出一个相同或相近的选项替换句中划线部分。

1． Our new English teacher speaks fast． Most of us can’t follow her．

    A． find                             B． run after                       C． understand

2． His father gave up smoking two years ago．

A． enjoyed                        B． failed                           C． stopped

3． He came back so late that his father was angry last night．

    A． gave back                    B． returned                       C． brought back

4． Take it easy．I’m sure you will pass the exam successfully．

    A． Keep it up．                 B． Don’t be sorry．          C． Don’t worry

5． Jack heard from his parents yesterday．

    A． received a letter from    B． heard of                       C．got a present from