That old woman lives alone. But she refuses others’ help and does everything by ______.
| A．her | B．herself | C．she | D．hers |
Tom and Paul usually watch TV ______ weekends.
| A．at | B．in | C．for | D．/ |
Every day the old man takes these children home _____ school.
| A．at | B．to | C．from | D．after |
Could you come to my office ________ the day after tomorrow.
| A．/ | B．on | C．in | D．at |
We had built three bridges over the river _______ the end of 1994.
| A．at | B．on | C．for | D．by |
Life will be better _____ the 21st century.
| A．at | B．on | C．for | D．in |