—President Obama has never been to Beijing, ______ he? — He visited the Great Wall on the afternoon of November 18th,2011.
What ____ you _____ at that time last night?
Every time I heard the other students talking and _____, I felt my heart ____
Our English is very ______ to us. We all love her.
I wondered _____ the man was.
A: Can you show me how to use the chopsticks? B: Sure. You can do it _____ this.