Student evaluation of learning and teaching

Hello everyone
I am interested to see what other universities ask as an open-ended question reagarding teacher improvement in their evaluation forms. Here at Adelaide these forms are called SELTs - Student Evaluations of Learning and Teaching. The open-ended 'improvement' question we have is 'x could improve student learning by . . .' This follows the question, 'What are the best aspects of x's teaching?'. I would like to know how other universities phrase this 'improvement' question, as I have identified a problem with the word 'could' when used by international students. They often take it as meaning 'was able to' and are puzzled by the question, assuming they are being asked the same thing twice. i.e. they think it means 'x improved my student learning by . . .' How do other universities phrase such a question?
Thanks.
Julia