问题

The threestorey building, ________in the 18th century, was turned into a museum in 1960 [ ]
A: constructing
B: constructed
C: being constructed
D: when constructed
B: constructed
C: being constructed
D: when constructed
正确答案是:
同类题型
John is ________ honest boy. He has ________ useful book.
You look unhappy, my son—I’m wondering how long it’ll be wecome to China again.
We don’t of her going to work in the fields in the sun.
The joke the naughty boy _____ his teacher made many people angry.
If there ______ not the Communist Party, we _____ a happy life. [ ]