— How many students are league members in your school? — League members ________ one fifth of the number of the students in our school.
Though I am improving my study, I still have a long way to go __________ some of my classmates.
The traffic on the main streets has a longer green signal than __________ on the small ones.
Alice received an invitation from her boss,__________ came as a surprise.
Paper is __________ great Chinese contribution to human civilization.
Read this story,__________ you will realize that not everything can be bought with money.