—Do you think yesterday’s math problem was difficult? —Yes. I could ________ work it out. 

I work hard this term, but Peter works much ____.

 -  Excuse me, would you please speak a little more_______? -Sorry, I thought you could follow me.

 --- _____do you study for a test?---By reading the textbook.

–Do you know this boy?He works really___.–Yes, I can ___ see him play. He always studies.