How long have you ________ the car?[ ]
A. bought
B. started
C. borrowed
D. had
答案:D
Robert _______ a book about his experiences in China.I hope he can find a good publisher when it is
finished. [ ]
A. was writing
B. is writing
C. has already written
D. wrote
施工现场开挖非热管道沟槽的边缘与埋地外电缆沟槽边缘之间的距离不得小于 0.5m。()