阅读对话,用所给动词的适当形式填空
阅读对话,用所给动词的适当形式填空
1.A:____the train____?(arrive) B:Yes,it____.
A:When____it____?(arrive) B:Half an hour ago.
2.A:How many times____ the doctor____(be) to America?
B:He____(be) there three times.
A:When____ he ____(go) there?
B:He____(go) there in 2000,2003 and 2006.
【直接写出要填的词】