It was in the lab was in the charge of Mr white they did the experiment.
| A．Where; what | B．which; that |
| C．that ; where | D．that ; which. |
The school has developed an online system________ students can choose their own teachers.
| A．which | B．when | C．that | D．where |
We should do what we have to do________ we can do what we want to do in the future.
| A．so that | B．in case | C．for fear that | D．now that |
—Is that the small town you often refer to?
—Right, just the one________you know I used to work for years.
| A．that | B．which | C．where | D．what |
Our attitude towards life is________makes the difference between our being happy or not.
| A．that | B．whether | C．what | D．which |
The hotel wasn't particularly good，but I ________ in many worse hotels.
| A．was staying | B．stayed | C．would stay | D．had stayed |