I really don’t know how to express my thanks to Mr. Li, my high school English teacher, without whose help I__________ to college that year.

A．weren’t to go

B．hadn’t been able to go

C．couldn’t go

D．couldn’t have gone

送乘坐国内航班(车站)离站的团队，到达机场(车站、码头)后，______应将______交来的(交通)票据和行李 (托运)单或行李卡清点无误后交给全陪，请其清点核实。