The first texbook ____ for teaching english as a foreign language came out in the 16th century.空处的答案是written,解析说因为texbook与written是被动关系,但是被动语态不是要在BE动词前面加BE的吗?这里为什么不用?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/20 19:46:55
xTMoW+#,o)r$Ku)]tW5Q]M11=~L}3_y0&H3w=^~SS^v%~R~Gyo}3PV OhnD}YSBш*D[&kHtǺ4