—Look! The lake is clean. I never throw litter into it.
—If everyone does this, it would be ________.
dirtier
the dirtiest
cleaner
the cleanest
Please be ________ .There’s an important meeting in the next room.
The girl in purple is new here, so ________ people know her.
— I called you yesterday evening, but you were not in . — Sorry, I ________ in the shop with my mother.
Oh, it ________so nice. What beautiful music it is !
I’ll go to visit my aunt in England _____ the summer holidays start..