A.is cleaning
B.has been cleaned
C.was cleaning
D.has been cleaning
A.works
B.worked
C.has been working
D.had been working
开始考试点击查看答案A.work
B.are working
C.worked
D.have been working
开始考试点击查看答案A.am reviewing
B.have been reviewing
C.have reviewed
D.reviewed
开始考试点击查看答案A.has played
B.is playing
C.has been playing
D.was playing
开始考试点击查看答案A.was going
B.have been going
C.has been going
D.are going
开始考试点击查看答案A.work
B.had been working
C.had worked
D.have been working
开始考试点击查看答案A.explored
B.is exploring
C.has been exploring
D.has explored
开始考试点击查看答案A.phones
B.has phoned
C.has been phoning
D.phoned
开始考试点击查看答案A.has been accelerating
B.had accelerated
C.is accelerating
D.accelerated
开始考试点击查看答案A.phones
B.has phoned
C.has been phoning
D.phoned
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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