which, where, that; whited, whiten, whitened Thirty-year-old Josh Donahue, a managing editor for a men's health magazine in Australia, is heading for a dental clinic ______ he is having his teeth ______.
which, where, that; whited, whiten, whitened Thirty-year-old Josh Donahue, a managing editor for a men's health magazine in Australia, is heading for a dental clinic ______ he is having his teeth ______. 【正确答案】：where; whitened
