--- It’s difficult for the village children to cross the river to get to school.
--- I think a bridge ________ over the river.
| A．should be built | B．should build | C．was built | D．has been built |
He is sitting _______ the room that is _________ the old tree.
| A．in the front of/in the front of | B．in front of/in the front of |
| C．in front of/in front of | D．in the front of/in front of |
The doctor told me to take this medicine ____.
| A．in time | B．on time | C．at times | D．by the time |
The little girl made money ___ selling flowers.
| A．in | B．on | C．with | D．by |
Our Chinese like eating moon cake ____ Mid-autumn Day.
| A．in | B．at | C．on | D．during |
Would you mind not picking up the flowers in the garden? They are ____ everyone’s enjoyment
| A．to | B．for | C．at | D．in |