Can you describe____？
Yes． I was walking when a bike knocked me down from behind．（ ）
A．why did the accident happen
B．when did the accident happen
C．how the accident happened
D．where the accident happened
Look at the girl in the square!
Oh． I'm surprised that a ________ girl can dance so well! （ ）
A．three﹣years﹣oldB．three﹣year﹣old
C．three years old
You can only keep the books for two weeks， Tom． Remember ____them on time．
I will． （ ）
A．returnB．returningC．to return
Do you know the student _______got an A in the English exam？
Of course． She is my deskmate， Li Hong． （ ）
A．whoB．whomC．whose
Have you ever been to South Tower Park？
Yes． I ___________there a few months ago． （ ）
A．wentB．have beenC．have gone
My daughter seldom has breakfast．
It's ________unhealthy habit． Breakfast is very important to health． （ ）
A．aB．anC．the