问题
选择题
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
答案
D。
由于“他”与“训练”之间为被动关系，故可排除A和C。另外，由于被训练进行航空飞行是他被派往那儿的目的，所以宜用不定式，故选D。