—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
There are fifty students in our class, _____ of us _____ football.
—Hi, Lucy. Have you finished your homework yet? —No, just a half. I am really bored with so much homework. —_____
I didn’t have _____ to say, so I said _____.
—Have you _____ had dumplings? —No, not _____.
The shoes were worn out, what’s more, they aren’t worth _____.