Question

she...... come yet. we're still waiting for her.​

Answer 1

she-----come yet, we,re still waiting for her.

Answer 2

She hasn't come yet.

When there is a usage of has/have/had, the sentence is said to be in the present/past/future perfect tense.

• Has is used when a statement is in the present perfect tense. It is used when the subject that it is used with is singular, or when pronouns like he/she/it are used.
• Have is used when a statement is in the present perfect tense. It is used when the subject that it is used with is plural, or when pronouns like they/you/we/I are used.
• Had is used in a statement that is in past perfect tense irrespective of the singularity or plurality of the subject.

Also, the above sentence is a negative sentence due to the usage of 'hasn't.

#SPJ2