问题

No one knows for certain how the first Americans arrived in _____ is now the United States.

A:which
B:what
C:where
D:why;

正确答案是：

同类题型

Can you climb up the tall tree over there,David –Yes, let me _______.

Was it in Shanghai, where the World Expo 2010 was held ______ you met Helen?—Yes. We hadn’t seen each other for about 5 years.

It was only when I entered high school _____ the importance of English.[ ]

I did very well in theEnglish exam last week —Idid _________ I got a full mark

I had a good time last week.