(B)You should have enough knowledge about what will happen if there is an outbreak of enterovirus. Here are some ways to help yourself and your family. First of all, get enough information to know if enterovirus       33    . Second, people need to decide   34   at home. Above all, the parents have their children wash their hands often with soap and water. Everyone in the family always covers the mouth with the mask when   35   . The parents should   36    their children   36   going to the public places. Children have to stay at home if they have any symptoms. By following the simple rules, keep it under control.

【題組】33.
(A) happened
(B)to happen
(C) is happening
(D) will happen