such heavy pollution already, It may now be too late to clean up the river.
| A．Suffering. | B．Having suffered. | C．To suffer. | D．Suffered. |
Each of the students, working hard at his or her lessons, _______ that all of them can do well in the coming examination.
| A．was convinced | B．is convinced |
| C．were convinced | D．are convinced |
—I’d like to talk with you about the new car，Robert.
—________ Talk with me about what?
| A．I apologize. | B．Pardon? |
| C．No way. | D．Good idea. |
Having been praised by the teacher, the little girl ran back home, _______.
| A．happily and satisfied | B．happy and satisfied |
| C．eager and excitedly | D．anxiously and excitedly |
-----Are you a journalist?
-----No, but I _______.
| A．was used to | B．used to |
| C．used to be | D．was used to being\ |
_______ the U.S.-China relationship as “the most consequential(重要的)” in the world, U.S. Secretary of State John Kerry called for greater cooperation between the two powers.
| A．Described | B．To describe |
| C．Describing | D．Having described |