I admire my English teacher. I can remember very few occasions ________ she stopped working because of ill health.

According to our teacher, we should take detailed notes in class because they are more __________ than our memory.

The company’s profit drop _____ in the last three months of 2009 due to the financial crisis [ ]

Thousands of people turned out into the streets to ________ against the local authorities’ decision to build a highway across the field.

The problem will appear _______ a different welfare system will be created.[ ]