—There has been less and less pollution in Leshan these years.
—The government has made a great effort on it. I’m sure this problem ______ one day in the future.
was solved
solves
will be solved
It is ________ of people to help the disabled.
I have already _______ the novel for a week. I must return it _______ the library tomorrow.
Don't risk the street when the red light is on.
The girl has learned English ________.
“Will it rain tomorrow?”“_____。We’ll have a field trip tomorrow.”