He made a(n)______ that he would buy a large house for his parents when he became rich.
Michael didn’t do homework as _______ as Kangkang, _______.
Why not _______ our bicycles _______ Beijing?
We will arrive _______ the Palace Museum at 10:00 _______ May 1st.
—Could you give me some _______ on how to learn English _______? —Sure. Practice makes perfect.
Which of the following is NOT a traffic sign?