An earthquake _______at Dachaidan County in Qinghai province on the morning of April18.

Our English ______ far better in a month if we try harder.

How can I get to the cinema? — You can ask the policeman over there. He will tell you which bus ______. [ ]

I have some problems _____ my Chinese learning. Can you help me with it?—Sure.[ ]

Great changes have taken place in that school. It is no longer ______ it was 20 years ago, _____ it was so poorly equipped.