A.is preparing
B.was preparing
C.had been preparing
D.has been preparing
A.taught
B.was teaching
C.has been teaching
D.had taught
开始考试点击查看答案A.sell
B.have sold
C.have been sold
D.have been selling
开始考试点击查看答案A.write
B.have been writing
C.have written
D.was writing
开始考试点击查看答案A.work
B.are working
C.have been working
D.worked
开始考试点击查看答案A.have been walking
B.had walked
C.was walking
D.walked
开始考试点击查看答案A.studies
B.studied
C.is studying
D.has been studying
开始考试点击查看答案A.have been carrying
B.carried
C.have been carried
D.were carried
开始考试点击查看答案A.am reading
B.read
C.have been reading
D.have read
开始考试点击查看答案A.was experiencing
B.will be experiencing
C.have been experiencing
D.had been experiencing
开始考试点击查看答案A.worked
B.has been working
C.is working
D.works
开始考试点击查看答案高中数学代数与函数一数系的扩充与复数的引入36
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入28
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入29
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入30
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入31
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入32
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入33
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入34
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入35
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入26
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