Definition of altar

[ingolf]

English Language Tests, Intermediate level

ESL/EFL Test #88 "Simple Present (5)", question 8

She smiled at me when we were standing ......... the altar.

(a) in
(b) at
(c) on
(d) through

English Language Tests, Intermediate level

ESL/EFL Test #88 "Simple Present (5)", answer 8

She smiled at me when we were standing at the altar.

Correct answer: (b) at
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what does it mean altar

[Torsten]

An altar is a place in a Christian church were gifts are given to God. Usually the Christian wedding ceremony takes place in front of the altar.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Lotinmaxceau]

Why don't we use "on" in this sentence instead of "at"?