When I began to sing, he laughed and laughed, which made me .A、embarrassed B、impolite C、exhausted
She prefers noodles ________beef and tomatoes.
I don’t like doing the cleaning, because it is ________.
The boy spent 10 dollars ________ the model plane.
America is a ________ country. A.develop B.development C.developing D,developed
We should keep our classroom _______.