His house, for _______ he paid $10, 000, is now worth $50, 000.
Has some bad thing happened to her?It’s________her to drink so much.
I admire Stephen Hawking greatly,whose________about black holes has a great effect on astronomy.
The new traffic rules that took effect on January 1 are much stricter than________in the past.
It’s really a small world!I________we would meet here.
It is shown that men have________as women do on average while driving according to recent statistics.