be. are. is; household, households, householders　　According to new census data, the gap between rich and poor Americans _______________ now at an all-time high, with the top 1/5 of American __________ claiming more than half of all the nation's income.

modal auxiliary

subordination

Using inversion:　　They didn't sight the snowcapped peak until they had walked for nearly three hours.

Using discontinuity:　　Prof. Smith wants to talk to her about the practicability of the research method in person.

What are the differences between determiners and adjectives?

Using transferred negation:　　I think he won't come to the party tonight.

Adding a suitable tag:The man talking with Jane is the manager.

Using subordination:　　I don't like the idea The idea is that we go for an outing on a rainy day.

Using a relative clause:　　She was very angry with the man. He called her at midnight and then found that it was a wrong number.

Using coordination:　　Short periods of fasting could help people lose weight. Short periods of fasting could lead to better health.