When asked why he went there, he said he
题型：选择题
问题：
When asked why he went there, he said he was sent there for a space
flight.[ ]
A. training
B. being trained
C. to have trained
D. to be trained
When asked why he went there, he said he was sent there for a space
flight.[ ]
A. training
B. being trained
C. to have trained
D. to be trained