关于护理程序的论述，正确的概念是A．是一种护理工作的分工类型B．是一种护理工作的简化形

All flights in and out Tianhe Airport came to a ______ because of the snowstorm.

A．stoppage

B．closure

C．silence

D．standstill

All flights ______ because of the storm, they decided to take the train.

A．having canceled

B．were canceled

C．having been canceled

D．have been canceled

All flights ______ because of the snowstorm, we decided to take the train.

A．were canceled

B．had been canceled

C．having canceled

D．having been canceled

All flights ______ because of the snowstorm, they decided to take the train.

A．were cancelled

B．have been cancelled

C．had been cancelled

D．having been cancelled

All flights ______ because of the heavy storm, we decided to take the train.

A．having canceled

B．being canceled

C．having been canceled

D．canceled

All flights _________ because of the snowstorm, many passengers could do nothing but take the train.

A) had been canceled B) have been canceled

C) were canceled D) having been canceled

All flights ______because of the snowstorm, we decided to take the train instead.

A．were canceled

B．had been canceled

C．having canceled

D．having been canceled

All flights because of the snowstorm ,many passengers could do nothing but wait.

A.had been cancelled

B.were cancelled

C.have been cancelled

D.having been cancelled

All flights ____________________(被取消了) because of the terrible weather, they had to go there by train.

All flights ________ because of the storm, they decided to take the train.

A) having canceled

B) having been canceled

C) were canceled

D) have been canceled