将本句改为被动语态,每空一词:His doctor made him have only two meals a day.He ______ _______ _______ _______ only two meals a day.
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将本句改为被动语态,每空一词:Now people can use computers to help them.Now computers _______ ______ ______ to help them.
将本句改为被动语态,每空一词:Did you plant many trees at this time last year?_______ ______ _______ _______ at this time last year ?
将本句改为被动语态,每空一词:Must we finish our work today?_______ our work______ _______ today?
将本句改为被动语态,每空一词:The foreign friends gave us some wonderful stamps.1) _______ ______ _______ some wonderful stamps.2) Some wonderful stamps _______ ________ _______ _______.