It 做形式主语练习1. In fact is a hard job for the police to keep order in an important football match. A. this B. that C. there D. it2. Is necessary to take off our shoes when we enter the lab? A. everyone B. this C. her D. it3. _ will take you a lot of time to find him in the crowd. A. It B. I C. We D. They4. It is no use _ there, the situation is hopeless now. A.
