elt.oup.com/student/project/level1/unit01/grammar/exercise4?cc=cz&selLanguage=cs
There is/There are
www.englishexercises.org/makeagame/viewgame.asp?id=7690
elt.oup.com/student/project/level1/unit01/grammar/exercise5?cc=cz&selLanguage=cs
