The students how to do the experiment in class yesterday.
【2013湖北咸宁】— Anna, have you ______ seen China’s Got Talent (达人秀)?—Of course. I ______ it last weekend.
【2013湖北咸宁】— I called you yesterday evening, but nobody answered the phone. — Oh, I a walk with my parents at that time.
【2013山东威海】— your son ______a camera? —No. He ______one this summer vacation.
【2013陕西】When you ________ at a restaurant , please order just enough food .
【2013天津】I saw him in the library yesterday. He______ a book at that moment.