Under criminal law, people who      carry and use large numbers of fake banknotes will be sentenced to less than three years in prison.

I could hardly tell the twins apart because their appearances are only ____ different.

The national parks are very important for the protection of these wild animals, which would ______ run the risk of becoming extinct.

Nearly 200 people entered the area ______ to mine diamonds in 2000, and eventually had to be driven off by the police. 

—What did you do last weekend?—Oh，nothing________.