grammar of vocabulary tests?

[Rodley]

English Grammar Tests, Elementary Level

ESL/EFL Test #43 "Basic English Grammar", question 9

There are 12 ......... in a year.

(a) days
(b) weeks
(c) months
(d) hours

English Grammar Tests, Elementary Level

ESL/EFL Test #43 "Basic English Grammar", answer 9

There are 12 months in a year.

Correct answer: (c) months
_________________________

The question is not specific to grammar but it deals with measurement.

[Mister Micawber]

.
No, it deals with vocabulary.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber