No: it requires an object for the verb "open". It would be correct to say something like "We must not open burning packages."
Yes, if it means "We must not open (our shop, for example) while it is on fire.
It means it must be grammatically correct. The word spellings and the structure should be correct too.
No because the linking verb you use is in the past subjunctive plural form but you must use "was" a past indicative plural form.
In a grammatically correct sentence there must be a subject,verb and object agreement.
Depends. I could say "You and I went to the mall", but you can't say "He can't come with you and I". If you use I, it must be in the subject of a sentence. You must use me in the predicate.
A sentence must contain a subject and a verb to be considered grammatically correct. If a group of words lacks this structure, it is not a complete sentence. It may be a sentence fragment, a phrase, or a list.
Yes. While I must say the question was hard to read, I do believe it's possible. PS: I just did.
Correct: The words of the puppeteers must be spoken clear for all to hear. (The wrong perfect tense of the word was used)
No. A sentence need only be a complete thought - meaning that if it has two or more words, one of them must be a finite verb.
This is not a sentence - a sentence must have at least a subject (noun or pronoun) and predicate (verb). This sentence does not have a subject. I suggest, "I am sending these goods back to be repaired or credited, as they are not in a hygienic state."
I think that this is a riddle; that this is too easy; that something must have been left out of the question; that I should not even bother; that the author of the question doesn't know how easy it is; thatthis answer is grammatically correctly; that this answer is done.
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....
Yes. It means that the kitchen must be kept clean.If the kitchen is dirty, the phrase would be the kitchen needs to be cleaned, i.e. it needs cleaning.