Many teenagers in the USA like baseball. But in China, it is not popular at all. [ _____ students can play it.

下列各句中，表达得体的一句是（ ）

Roy didn’t want his mother to work so hard to ________ his college education.

Here ____！ Where is Xiao LiuThere ____

Eye doctors suggest that a child’s first eye exam____at the age of six months old.