问题

________, the boy couldn’t enter his house

A:Since the key has lost
B:The key been lost
C:Lost the key
D:Having lost the key

正确答案是：

同类题型

Three criminals were caught and asked toaid in the .

.-Have you found the information about the famous people_________ you can use for the report-Not yet. I’ll search on the Internet.

Clothing made of man-made fibers has certainadvantages over ______ made of natural fibers like cotton，wool or silk

下列各句中，没有语病的一句是（）

Do you think he is _______ to come here