So ____ that no fish can live in it.
| A．shallow is the lake | B．the lake is shallow |
| C．shallow the lake is | D．is the lake shallow |
Whether dying patientsbe helped to end their lives is a tough moral question.
| A．must | B．should | C．might | D．would |
— Why do you do volunteer work in the North-West?
— I_______ to improve the lives of the children there through my efforts.
| A．was trying | B．have tried | C．am trying | D．tried |
John began to feel little beads of sweat going down the back of his neck. His words seemed to have had no visible _______ on the man.
| A．affect | B．effect | C．affection | D．impact |
Living in the mountain area has its problems, ________ obtaining water is a big problem.
| A．of which | B．for what | C．as | D．whose |
Old Richard,ill so long, is losing his memory and needs to be attended to.
| A．to be | B．being | C．having been | D．to have been |