---Dad, brother is playing football in the study.---Let it be. A boy like him __________ be naughty(调皮的).
In the experiment we kept _____ watchful eye on ______ developments and recorded every detail.
I remember the time _____ Eric won that speech competition. A where B why C when D which
You like travelling, _____ you? A don’t B won’t C didn’t D haven’t
Jack, _____ friend, went back to America last Monday. A me B I C my D mine
— My bike is broken. _____ I use yours? — Sure. Here it is. A Must B Will C Should D May