Soon after getting off his horse, the man appeared at the second storey windows, __ he could see nothing but trees.
| A．from which | B．from where | C．in where | D．which |
You’d better _____ some money for special use.
| A．pick up | B．set aside | C．put off | D．give away |
Many studentspreparing for the midterm examination.
| A．are engaging in | B．are engaging themselves |
| C．are engaging themselves | D．are engaged in |
________ from space, the earth , with water_______ seventy percent of the surface , looks like a blue ball.
| A．Seen ; covered | B．Seen ; covering |
| C．seeing ; covering | D．Seeing ; covering |
— What made her so sad？
— _____ she failed in the examination.
| A．That | B．Because | C．As | D．Since |
Honestly speaking, it is my teacher’s _____ that made me finally take up my present career
as 
a biology researcher.
| A．advantage | B．influence | C．taste | D．guard |