Although he knew little about the large amount of work done in the field, he succeeded ________ other more well - informed experimenters failed.
| A．which | B．that | C．what | D．where |
.
._____ the mud from your shoes before coming in, or you will make the floor dirty.
| A．Removing | B．To remove | C．Removed | D．Remove |
.
.In this remote village stands an ancient temple_____ from hundreds of years ago.
| A．dated | B．to date | C．dating | D．to be dated |
.
.Fire safety in houses, _____ most deaths occur, is difficult to achieve.
| A．where | B．which | C．to which | D．from which |
.
No matter how great the difficulty is, it can’t _____the experts from finishing the project on time.
| A．hold back | B．hold up | C．hold out | D．hold on |
.
Whenever you enter the reading room, you can find all the students _____ at their desks, with their attention _____ on the books, except Tom.
| A．sitting, fixing | B．to sit, fixed | C．seating, fixing | D．seated, fixed |