The students asked _________________.
A.when can they surf the Internet in class |
B.when could they surf the Internet in class |
C.when they could surf the Internet in class |
D.when they can surf the Internet in class |
推荐套卷
The students asked _________________.
A.when can they surf the Internet in class |
B.when could they surf the Internet in class |
C.when they could surf the Internet in class |
D.when they can surf the Internet in class |