Who would you rather ________ the watch?
Effective treatments do exist, but __________ they are very expensive.
Mr. Smith is very kind-hearted as well as responsible, so you are __________ to have such a good teacher as he is.
The boat sank quickly but __________ everybody was rescued.
Alice was lucky enough and she was the only one of the girls in her school who __________ to France as an exchange student.
Mary is the only one of the teachers who __________ a little Chinese because she is one of my friends who __________ been to China.