All the athletes competed _____ each other for gold medals in the Olympic Games.
| A．against | B．for | C．between | D．over |
I don't think you can work out the maths problem ____ the teacher's help.
| A．since | B．unless | C．because | D．without |
My uncle lives ____ 105 Huanghe Street. His room is ____ the fifth floor.
| A．at;on | B．at;at | C．on;in | D．of;to |
Mr Wang went to Nanjing ____ October,1998 and came back home ____ the morning of Nov.5.
| A．at;in | B．on;at | C．in;on | D．by;from |
My father was disappointed ____ the news.
| A．by | B．about | C．at | D．on |
His teacher was angry ____ him ____ his being late.
| A．at,with | B．at,for | C．with,for | D．with,about |