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Allow children the space to express their opinions ________ they are different from your own.
| A．until | B．even if | C．unless | D．before |
Though we take a great risk of investing in the project, yet it will ______ in the long run.
| A．go off | B．turn up |
| C．pay off | D．come up |
Although a teenager, Fred could not resist ______ what to do and what not to do.
| A．telling | B．to tell |
| C．being told | D．to be told |
The child is much too young; I object ______ him alone at home.
| A．to leave | B．leave |
| C．leaving | D．to leaving |
We are bound ______ with difficulties in carrying out this research.
| A．to meet | B．to have met |
| C．meeting | D．having met |
________ is often the case with elder people, my grandma talked about my new hairstyle for at least 50 minutes nonstop.
| A．That | B．Which | C．As | D．It |