section a （15 marks） choose the one that best completes the sentence．
1．the ability one’s idea decides how far one can get along with one's colleagues．
a．expressing b．expressedc．to express d．to be express
2．china’s northwest regions ____ to invest more in infrastructure, tourism and tourism-related industries to attract more visitors to the ancient silk road.
a. had planned b. are planning c. would plan d. is planning
3．the headmaster is said to have returned from vancouver, where he with another sister school－westside school．
a． would sign b．is signing c． signs d． signed
