【单选题】I _______my English book at home, so I had to ____one from my classmate.
【单选题】I my homework yesterday, but unfortunately I forgot about it totally.
【单选题】I _____ my homework at home this morning. [ ]
【单选题】—Where ______ you ______ Elsa? —At the supermarket. But she almost forgot my name. [ ]
【单选题】my guest have forgotten my address?
【判断题】一组4位二进制数组成的BCD码可表示16以内的任何一个十进制数。
【单选题】下列网页文件扩展名中,不属于动态网页的是