I can’t believe that there are _____ many poor people in ____ a rich country

I couldn’t imagine ______difficult it was for these badly injured victims to make it to the hospital.

In my opinion, all Mr. Li ______ good to his students in his class at present. He is very strict with them in their studies.

He made another wonderful discovery, _______________ of great importance to science.

What’s this_______English —It is a map。