Which one is correct "at an" or "in an"?
37077
"At" or "in" the office?
143283
What does A a() mean?
76513
Correct usage of ‘on’, ‘at’ and ‘in’
106605
I'm a teacher and I teach at/in school OR at/in a school
28447
The confusion between "The" or "A" article
110711
Difference between "per" and "a"
48534
When do we use "arrive at" versus "arrive in"?
128742
'in' vs. 'on' for dates
2182
vs. . Which to use?
137399
Correct use of 'with' or 'at' when talking about percentages?
84722
Should we use "in terms of"?
64634
work in/at/on something
29397
Does one use 'a' or 'an' before the word X-Ray?
11864
"As part of" versus "as a part of"
152119
"regarding", "according to" or "in"
79745
Dates and times: "on", "in", "at"?
59969
Difference between "at" and "in" when specifying location