1 . 令人惊讶的是，印加人在1450年左右修建了马丘比丘，却在一个世纪后让其成为废墟。(it形式主语)
________ the Incas built the city of Machu Picchu around 1450 but ________.

2 . The church was built ______ and it looks magnificent with its lights on ______.

A．in 16th century; in the evening	B．in 16th century; in evening
C．in the 16th century; in the evening	D．in the 16th century; in evening