_____the beginning of the 19th century did scientists know that all matter is made up of atoms.A,At B,By C,Up to D,Not until
Some old people don’t like the music of the Beatles because they can’t _________ so much noise.
I have had my bike ___, and I'm going to have somebody ___ my radio tomorrow.
____ more attention, the trees could have grown better.
What the doctor said was so ___________ that we were all very____________.
_______ number of people poured into the cinema, and I lost ___________ sight of Alice in the crowd.