—I have worked hard at English, but it seems that I haven’t made any progress.
—Keep on _____ at it, and you will be successful.
A.work | B.working |
C.to work | D.works |
—I have worked hard at English, but it seems that I haven’t made any progress.
—Keep on _____ at it, and you will be successful.
A.work | B.working |
C.to work | D.works |