If you keep learning English for half an hour each day,your English will be gradually improved.( )
at least
at present
at once
at first
In the piano contest, my brother didn’t play well and I did __________.
Mike is a good boy. He often _________ to help his classmates.
Lao She is one of _____________ of the twentieth century.
__________ you go jogging, ___________ you will feel.
Let’s try to speak English as __________ as possible.