They have to set a（n）__________ to the expense of the trip given that little money they have.
| A．edge |
| B．border |
| C．regulation |
| D．limit |
Many facts proved that long before Columbus ________ America, Chinese had visited it.
| A．noticed | B．uncovered | C．discovered | D．arrived |
Tom is good boy and _______ he is honest. He never tells a lie.
| A．at all | B．in all | C．above all | D．after all |
_______ the normal condition, he can read 150 words a minute.
| A．Below | B．Under | C．With | D．In |
Hearing the sound of shots, the birds flew away ______ all directions.
| A．at | B．for | C．from | D．in |
——How is it that you are late for class again? ——________.
| A．By bus and then on foot | B．It’s quite all right |
| C．Because I missed the bus | D．It’s far from school |