用括号内所给的词的正确形式填空
The _______ have just arrived.( visit )
单项选择
1.I don't know _____.
A.how to do B.what to do it C.how do it D.how to do it
2.He ______ Sydney since two years ago .
A.has been to B.has gone to C.has been in D.has gone in
3.You'd better ask P.E.teacher,______ you?
A.didn't B.hadn't C.weren't D.won't