“I still haven’t thanked Aunt Lucy for her present.” “It’s time you _____.”
| A．do | B．did |
| C．had | D．would |
What especially impressed us was the way_____the girl studied foreign languages.
| A．不填 | B．which | C．by which | D．how |
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 |