用所给单词适当形式填A:How many times()the doctor()(be）to America?B:He()(be)_英语解答

用所给单词适当形式填A:How many times()the doctor()(be）to America?B:He()(be)there three times.
A:When()he()(go)there B:He()(go)there in1999,2001and2004.

人气：281 ℃　时间：2019-10-23 05:10:27

解答

How many times(has)the doctor(been)(be）to America?B:He(has been)(be)there three times.
When(did)he(go )(go)there B:He(went)(go)there in1999,2001and2004.