Question

Hangzhou Metro Line 1 ,         into use in 2012, is expected to relieve the heavy traffic in this city.y accepted by , 20113 years in

A．to be put

B．being put

C．having put

D．put

Answer 1

Ａ

考查不定式用法。这条路线的投入使用是将来的事情，所以使用不定式表示将要发生的事情，两者之间又形成被动的关系，所以用过去分词表示被动。