_______ did you start studying English ? —–Five years ago.

This is the first time I __________ to the capital to attend the celebration ceremony.

Look at the sign. It _________ “No smoking”. —-Oh, sorry, I did not see it.

Miss Lin is handing out the exam papers. Let’s go and help_____.

Shall I tell you about it? —No, you _______. Sandy has told me already.