In the zoo，the number of visitors is tightly to avoid putting stress on the animals.

The government has taken ______measures to stop pollution, hoping to call the attention of all peopleto face the problem. [ ]

I scared of dogs ever since a dog hurt me when I was five years old.

Susan borrowed some books from me, but she forgot to ______them to me.

Jack Brown is very clever and he studieshard as well—No ________ he comes out first in theexams