Original title: Everyone (assembled) is in the hall where they are secretly welcomed.

Everyone gathered in the hall, where the minister received them.

Grammar: this question examines the meaning of words, and assemble means "set"; Accumulation means "accumulation, accumulation"; Pile means "accumulation"; Join means "join". So it is correct to fill in assemble here, because the past tense is used later, so we can know that this sentence is past tense, and assemble should also use the assembled past tense.

Extended data assembly

1, pronunciation: English [? Beautiful [? Assembly]?

2, interpretation: get together, get together.

3. Grammar:

The basic meaning of (1)assemble is "assembly", which is a formal term and often refers to gathering together for a certain purpose to form a group.

(2)assemble extension can be used as a solution of "assembly and combination", emphasizing the integrity of the consequences. It is a transitive verb, and the objects are mostly machines, models and so on. , which can be used for passive structures.