It is common __________ that a certain amount of regular exercises improves the health whether or not exercise adds to the length of life.
–Would you be kind enough to help me with my homework at one o’clock this afternoon? -- . Will two o’clock be OK?
--- One of the Fortune Global 500 companies offered her a position, but she refused. ---_________ ? It is a very good chance.
Yesterday I witnessed ____ car hit a tree and ___ driver was killed.
He kept yawning in class this morning. That is _____ he stayed up late doing his homework last night.
I want to show you is my gratitude and respect for your continuous and selfless help.