s a difficult and stressful job, butone _____ you can really help people

There were already 4 people in the car but they managed to take John as well. It ______ a comfortable journey.

Have you read thisbook — Yes But that one is ________ worth reading

The Yellow River is the second________ river in our country.

I think Tom, as the head of a big department, should cither study regularly or______his job. [ ]