'The clock has struck five.' is a complete sentence and hence 'none of se' is correct answer.

Where will y go tomorrow?

Will you fill up form for next exam?

You use 'no less/no lesser than' before an amount to indicate that amount is surprisingly large.

Sentence is in present perfect tense with active voice.
Rule :
Subject + have/has + V³ + or agents.
Has Nensi ever beaten you?

When deciding wher to use 'is' or 'are', look at wher noun is plural or singular. If noun is singular, use 'is'. If it is plural or re is more than one noun, use 'are'.

Sentence is in present perfect tense with active voice.
Rule :
Have/has + subject + V³ + or agents + ?
Have you ever visited Manali?

'is' is followed by –ing form of verb and refore 'speaking' is correct answer.

The preposition 'for' is used to denote a specific amount of time in which someone or something was performing an action. For example, 'I have been looking for my dog for some time now.' Here, 'for some time now' represents not an exact but particular amount of time. The word 'since', on or hand, refers to a particular point of time from when action started/began in past to present. It indicates that action is continuing. For example, 'Raj has been living in London since 2003.'
Here are a few more examples to help you understand how two prepositions are used.
Bruce has been travelling for past two weeks.
Neethu will be here for a few hours.
I have known you since you were a kid.
Shanti has been working as a content writer since 2018.