The shop doesn’t open__________11 a.m.
| A．for | B．or | C．but | D．until |
He made another wonderful discovery, _____ of great importance to science．
| A．which I think is | B．which I think it is | C．which I think it | D．I think which is |
Luckily, we'd brought a mad map without _______ we would have lost our way．
| A．it | B．that | C．this | D．which |
The boss ______ department Ms．King worked in ten years ago looked down upon women．
| A．in which | B．in that | C．whose | D．which |
He bought a book that could glee him much knowledge and ______ could help him to kill the time．
| A．that | B．where | C．which | D．there |
Whenever I met him, _______ was fairly often, I like his sweet and hopeful smile．
| A．what | B．that | C．which | D．when |