— Miss Lin _____ my desk-mate with her lessons when I left school.
—She is really a nice teacher.
| A．helps | B．is helping |
| C．was helping | D．help |
As soon as she entered her own room, she caught sight of the gift _____ by her father.
| A．buying | B．bought |
| C．was bought | D．being bought |
The president spoke at the business meeting for nearly an hour without ___ his notes.
| A． bringing up | B． referring to |
| C． looking for | D． trying to |
He is really an excellent doctor and he is _____ to becoming an expert in this field.
| A．in a way | B．by the way |
| C．on the way | D．under the way |
He is such a strong-willed person that there is nothing in the world that can _____ him.
| A．win | B．defeat |
| C．rescue | D．attack |
Come and see me whenever ____.
| A．you are convenient |
| B．you will be convenient |
| C．it is convenient for you |
| D．it will be convenient for you |