1.We ... drop litter un the streets a)can b) mustn't там ёщё есть(

We mustn't drop litter on the streets.

help! help! he is silly and cowardly. his face is ugly and awful. he has got a giant terrible nose. he can't swim, sing and run. he lives in a trash dump.

he will be ableto speakfrenchfree, when he returnsfrom paris.

can itake yourhand? -yesof course!

do you know howto skate?

whenhe was young,hecould walk20 kilometers a day.

no one couldhelp me.

you can dothe jobtomorrow?

iknow how to swimwhen i was 5years old.

you couldtranslate this text?

this bookcan be purchased atany store.

we cangoto the mountainsnext year.