Our Math teacher often gives us __________ on how to learn Math.
| A．some good advices | B．some good advice |
| C．an advice | D．some pieces of good advices |
The bridge________by the villagers last year．
| A．was building |
| B．was built |
| C．is building |
| D．is built |
They went to the church________silence．
| A．for |
| B．on |
| C．in |
| D．with |
My parents________for me to have dinner when I got back home yesterday evening．
| A．wait |
| B．waited |
| C．have waited |
| D．were waiting |
Most people are________building a paper factory near here．They are worried the river will get polluted．
| A．for |
| B．with |
| C．against |
| D．beyond |
Yesterday evening I was playing the piano________the doorbell rang．
A．when
B．before
C．while