After Billy said he would ride a bicycle safely, his father _____ to him and bought him one.
—You've made great progress in your studies of English,haven't you?—Yes,but much________.
Tom tried to escape from the burning building.________,he was hit by a piece of burning wood and was killed.
________is believed that the island can be a paradise(天堂)when people live________.
He ________ the last of his coffee and asked for the bill.
After a short rest,we went back to the office to ________ our meeting.