recommendations
The plural would be a normal S plural, twos. As a numeral, 2s is recommended, but the generally frowned-upon apostrophe version (2's) is sometimes clearer.
The hyphenated plural spelling "thank-yous" is usually recommended.
You can say:"The group (of dancers) was highly recommended." or"The dancers were highly recommended."Alternatively you can say "The groups (of dancers) were highly recommended."EXPLANATIONGroup is a singular collective noun. e.g. A group of dancers.The pronoun for a group, or the group, is 'it'. Therefore -> It (the group) was highly recommended.Dancers is plural. The pronoun for 'dancers' is 'they'. Therefore ->They (the dancers) were highly recommended.'Groups' is also plural. So 'They (the groups) were recommended' would be correct.------------------------------------But the question is talking about a group (of dancers). It is easy to make the mistake of thinking about 'the group of dancers' as a plural noun phrase, but 'the group' is clearly a singular collective noun, so the verb takes the third person singular form. i.e. he, she, it was...So the correct grammar is: 'The group of dancers was highly recommended.'
singular - (mir) wurde dieses Buch empfohlen plural - (uns) wurde dieses Buch empfohlen
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Isthmi is plural. There are actually two plural forms. I will list them from singular to plural. Isthmus - Singular Isthmi - Plural Isthmuses - Plural
The plural of rose is roses. The plural possessive is roses'.
The plural form of can is cans.
Knights is a plural. It is the plural for knight.
applied is does not have a plural but is apply it does have a plural.
The plural is a regular plural, attics.