_____ is mentioned above, the number of the students in senior school is increasing.
| A．Which | B．As | C．That | D．It |
The memorial ___ very soon lies in the north of the city.
| A．opened | B．having been opened | C．being opened | D．to be opened |
The student did what they ___ the old man.
| A．could help | B．could helping | C．could to help | D．might help |
The young man suddenly returned __ a rainy night.
| A．at | B．in | C．during | D．on |
He had rushed out of the door __ I could offer my thanks.
| A．unless | B．before | C．until | D．even though |
The wounded soldier lost ___ of blood.
| A．a great many | B．a large quantity | C．a great number | D．quite a few |