下列句子中没有语病的一项是

________ are you going to study— I’m going to study art and history.

You can’t answer my questions about internationalcharities, can you—- ___________. I know very __________ about them.

The young teacher found it hard to _____ his explanation in class to most of the class. [ ]

I heard you gave a big surprise to your mother on Mother’s Day.Yes. Only when I left my parents ______ how much I loved them.