— Do you know who _____ the tomb of Emperor Qin and who
| — Do you know who _____ the tomb of Emperor Qin and who _____ the mobile phone? — No, but we may ask our teacher. |
| [ ] |
| A. discovered; invented B. was discovered; was invented C. invented; discovered D. was invented; was discovered |
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1年前1个回答
你能帮帮他们吗