The Chinese Vice-President Xi Jinping _______ visit the United States on Feb 13 on a three-country tour.
| A．set out to | B．got down to | C．looked forward to | D．lived up to |
Was it through Mary , ____ was working at a high school , _____ you get to know Tom ?
| A．who, who | B．that, which | C．who, that | D．who, which |
Mary couldn’t make herself _______ attention to because her classmates made so much noise.
| A．paid | B．to pay | C．pay | D．paying |
He arrived here at noon, in the day, and he went out and came back in the day.
| A．late; late | B．late; later |
| C．later; late | D．later; later |
The time he has devoted in the past years _______ the disable is now considered ________ of great value.
| A．to help; being | B．to helping; to be |
| C．to help; to be | D．helping; being |
With the development of science and technology, people’s life _______ in the past few years.
| A．improved | B．has improved |
| C．is improving | D．had improved |