Fill in the Blanks Listening activity Tb2.3Online version Listening Tb2.3 by María Alejandra Farfán 1 what that through can't the go happens because question A : Let's the problem together . B : OK , so we know it's in either July or August , right ? A : Right . B : So , next ? A : Well , Albert then says he also knows when Cheryl's birthday is . So , is how does he know ? Easy ! At this point we have three possible dates left , two in August and one in July . It be in August . B : Why ? A : Albert has been told the month , and he is sure he knows when her birthday is . That is very important means her birthday is obviously in July . B : Of course ! If he had been told the month of August , he wouldn't know which day in August . A : Exactly , so the answer to our problem is that Cheryl's birthday is July 16 .