A grand jury is a group of___ who reviews the evidence in a criminal case. If the grand jury___, the suspect is formally accused of committing the crime.
If the grand jury___, the case will not go to trial at the time.

Citizens; serves an indictment; offers no indictment.

Explanation:

A grand jury is a group of citizens who reviews the evidence in a criminal case. Thus, grand jury are legally empowered by law to carry out an investigation with respect to a potential criminal case, engage in legal proceedings and determine whether or not an evidence is quite sufficient to warrant trial in a court of competent jurisdiction.

Hence, if the grand jury serves an indictment, the suspect is formally accused of committing the crime. This simply means that, the grand jury has ascertained that there are enough evidence to indict an accused.

However, if the grand jury offers no indictment, the case will not go to trial at the time.