Which of these do you think is ____ useful invention? [
| Which of these do you think is ____ useful invention? |
| [ ] |
| A. the more B. the second more C. most D. the second most |
可能相似的问题
你能帮帮他们吗
| Which of these do you think is ____ useful invention? |
| [ ] |
| A. the more B. the second more C. most D. the second most |
你能帮帮他们吗