Assistance dogs are trained to help disabled to live more independent life.
| A．/; a | B．a; the | C．the; the | D．the; a |
The young boy got himself into a dangerous situation_____he might lose control over his sports car.
| A．that | B．which | C．when | D．where |
What if we meet with a situation_____none of us are able to deal with?
| A．where | B．in which | C．what | D．that |
_____has happened many times, children may get drowned in this river.
| A．As | B．Which | C．What | D．That |
There is a mountain_____the top is always covered with snow.
| A．whos | B．of which | C．its | D．that |
The reason_____the manager explained at the meeting sounds reasonable.
| A．which | B．what | C．why | D．for which |