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
David， make trouble at school． （ ）
A．can'tB．don'tC．doesn't
Tony， come on， we'll miss the World Cup．（ ）
A．soB．andC．or
Must we finish the homework now？
Our teacher doesn't ask us to． （ ）
A．Yes， we mustB．No， we mustn't
C．No， we needn't
It is said that BRT（快速公交系统） in Yongzhou soon． （ ）
A．was usedB．will be used
C．is used
Mount Yangming is fantastic． you ever it？（ ）
A．Have； visitedB．Was； visiting
C．Do； visit