The field research will take Joan and Paul about five months; it will be a long time __________ we meet them again.
| A．after | B．before | C．since | D．when |
The car ran ___ the direction of Shanghai.
| A．to | B．in | C．on | D．for |
What animal can live both ___ land and ___ the water.
| A．on…in | B．at…on | C．on…on | D．in…under |
Mr Chen was ___ early thirthies when he went abroad to have his further studies.
| A．of the | B．in the | C．in his | D．on his |
Children often get presents ___ Christmas and ___ their birthdays.
| A．on…at | B．in…on | C．at…on | D．at….in |
You can find the new hospital ___ the end of the street.
| A．in | B．at | C．on | D．by |