____be careful when crossing the street!
| A．Must | B．Should | C．Ought to | D．Do |
Many years later，the father returned form the army and found that his daughter was no longer ________she used to be.
| A．what | B．how | C．when | D．whom |
Though he came from a family similar ________mine，we have little similarity ________taste.
| A．with；to | B．to；in | C．in；to | D．to；for |
The pyramid ________how many years ago，do you know?
| A．dated back to | B．dated from |
| C．dates back | D．dates back to |
The shepherd had to round up the sheep ________first night fell.
| A．until | B．before | C．after | D．till |
To the manager's joy，he is a(n) ________young employee.
| A．stubborn | B．ambitious | C．disappointing | D．subjective |