The construction is redundant: "Could not" means the same as "not able to."
You might use the form "would not be able to" or simply "could not" or "cannot" which are all roughly the same with some connotations that vary by tense.
Note that "could not" is the past tense but also colloquially used to say "will not be able to" in the future. All of these mean that something "cannot" be done (impossible), but in many cases it is a choice not to act. You should correctly use "may not" when something is prohibited, or "will not" when it is your choice not to.
The correct usage is "uncommunicative," meaning not inclined to communicate or share information.
No, "Is she and you arrived at the airport on time" is not correct. It should be "Did she and you arrive at the airport on time?" or "Did she and you both arrive at the airport on time?" for proper subject-verb agreement.
"Could you please wait just a moment?" - indicating a short amount of time "I just finished my homework." - indicating recent completion "I'm just trying to help." - indicating intention or emphasis
The correct punctuation for "which" would depend on its usage in a sentence. It could be followed by a comma if introducing a nonrestrictive clause or used without punctuation for a restrictive clause.
The correct usage is "during summer vacation".
The latter form is grammatically correct but the former is in popular usage.
"Two of them have sent" is correct usage.
As a consequence of his broken leg, he could not go on the skiing holiday.
Yes. You could also say, "Can you call her in a little bit?"
The correct usage is in Seventh Grade but to use this properly, you must out it in quotes. In "Seventh Grade" by Gary Soto,............
The correct usage is "uncommunicative," meaning not inclined to communicate or share information.
The correct usage in this case would be "If I were a volcano." "Were" is the correct subjunctive form when expressing a hypothetical or unreal situation.
No, "Is she and you arrived at the airport on time" is not correct. It should be "Did she and you arrive at the airport on time?" or "Did she and you both arrive at the airport on time?" for proper subject-verb agreement.
Depending on what "it" is, "took it off the car" can be correct English usage.
Yes it is correct.
The correct usage is:One ship sails on the water.Explanation:The reason why the correct usage is "on" is because the ship will sail on top of the water ie. on the water.
On the outskirts.