She just looks like her sister _____ her sister has shorter hair.
She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live in.
I thought her nice and honest _________ I met her.
You had better _____ some time every day for sports so that you can keep yourself energetic.
---Obama took oath (宣誓)of office in the White House。 ---When was _____? ---____was on January 23,2013.
When changing lanes, a driver should use his turning signal to let other drivers know _________ .