--How was your weekend, Rose?--Awful! This was the first time I ________ alone at home, bored to death.
______ you look at it, the fast, exciting pace of life in New York city is fascinating and will continue to fascinate more and more people.
______ reduce pollution,the government has made a policy to restrict the use of plastic bags in some areas.
The boy always spent the whole day ______ in the room reading English during the holiday.
Bad habits, _______ formed, are difficult, and sometimes impossible to shake off.
The monument was built in honor of the explorer who was believed _____ the river.