There are at l____ 10,000 people in this hall ,it's too crowded.线上应该填什么?（首字母已给出）

There are at l____ 10,000 people in this hall ,it's too crowded.线上应该填什么?（首字母已给出）
There are at l____ 10,000 people in this hall ,it's too crowded.
线上应该填什么?（首字母已给出）

There are at l____ 10,000 people in this hall ,it's too crowded.线上应该填什么?（首字母已给出）
at least:至少