问题
选择题
It is said that another new underground train ______ not far from the center of the city.
A．is to be built
B．has built
C．is to build
D．be built
答案
答案：A
本题需要的是被动语态，因此排除BC，而D前应该有加be动词原形的词，可是没有，是动词不定式的被动语态，故选A