一道英文题,需要讲解,He ____ his homework and now is listening to music.A,finished B,finishes C,has finished但是我认为A和C都可以啊，c在语法上有错误吗？

一道英文题,需要讲解,He ____ his homework and now is listening to music.A,finished B,finishes C,has finished但是我认为A和C都可以啊，c在语法上有错误吗？ He has been away for a week.___ ____ ____ he been away?对划线部分提问 还有一题He has been here since yesterday.____ ____ ____he _____ ____?能稍微讲解一下不能. 一道制图题,求讲解 问一道生物体我需要知道（3）题的答案以及讲解, 一道简单的英文题He waters the flowers in his garden every day（对划线部分提问，EVERY DAY是划线部分）____ ____ _____he_____the flowers in his garden? 帮忙讲解一道英语语法题He told me that you would be away from the present post,____?A.didn't he B.didn't you C.weren't you D.wouldn't you反义疑问句,不是跟主句的么,为什么不选A,再说特殊情况中没这个的?请说明一 需要讲解 需要讲解. 需要讲解. He is very hungry.He ____(需要) some food now. 一道数学综合题,需要讲解22分钟,问教师如何安排,使学生听这道题时,注意力的指标数 一道数学综合题,需要讲解22分钟,问如何安排,使学生听这道题时,注意力的指标数都不 一道大学物理圆周运动题（求讲解） 他完成作业后就立刻回家 英文He will ___ ____ ____ ____after he ____ ____ _____ 一道数学填空题、要讲解二次函数y=x的平方+x+1图象与x轴有____个公共点. 一道数学填空题、要讲解、、抛物线y=ax2+bx+c的顶点在y轴上,则在a、b、c中,____=0. 一道英语句型转换题I do my homework in the ecening.(变一般疑问句)___ you ____ your homework in the evening?一定要有讲解啊! 求各位朋友做一道题是,找规律.是一道小学数学的题目:6.25 2.5 1 ____ ____ 0.064我急需要答案,请帮助.