Yes. 'Its' in that sentence is short for 'it is' so it should have an apostrophe.
It would be Dr's order, but I would spell out the word. "Doctor's order".
The correct sentence would be:This is Luke's book.If Luke ended in an s, the apostrophe would be after the s ; since it doesn't, an apostrophe and then an s must be added for possession.Example: Jesus' disciples, John's disciples....
There is no apostrophe in that sentence. It would be in: The scouts' tents.
yes becasue cousins is plural you would do this: cousins'
There are three types of apostrophe. The possessive apostrophe, to show that a letter is missing and to highlight a word or phrase, eg 'hasn't', doesn't', 'can't'. The possessive apostrophe would be used in a sentence such as 'The student's work was of a high standard' meaning the work of the student. However if you are using the word students in the plural form, it would be written 'students' work'.
If it is required, the apostrophe would come after the Z but before the S. "This is Mr. Buzz's stinger!"
You don't need an apostrophe in that sentence. Studentsis a plural word, not a possessive.
there is no apostrophe in the word cyclist.
To correctly write a year with an apostrophe, you would place the apostrophe before the last two digits of the year. For example, 1990 would be written as '90.
To write the year with an apostrophe, you would place the apostrophe before the last two digits of the year. For example, '21 for the year 2021.
The apostrophe is not needed because deer is a singular and plural word. The sentence should read 'These deer antlers all have eight points.'
Bushfires shouldn't have an apostrophe.