Нужна помощь с этим номером

1) Teenagers recognize company logos very quickly.
2) Do you speak French?
3) Petra has ten icons on her mobile phone.
4) We dont know the meaning of this symbol.
5) Everybody understands the meaning of  and  ( можно сказать the meaning of these symbols).
6) Does Martin go shopping on Saturdays?
7) Communication is easy with symbols.
8) My brother doesnt work in an office.
9) You use hundreds of symbols on a computer.
10) Does the supermarket open at nine oclock?