----Where is your sister?_______ she _____ (go) on a study trip tp London?------No.She ______ (be) to Britain three times.

问题描述:

----Where is your sister?_______ she _____ (go) on a study trip tp London?
------No.She ______ (be) to Britain three times.

----Where is your sister? Does she go on a study trip tp London
------No. She has been to Britain three times.

Has gone
has been
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