had been lying will replace had laid because – a time period has been specified in the sentence.
Hence, Past Perfect Continuous Tense will be used.
Look at the examples given below :
We have been painting our house since last Friday, but we are still a long way from finishing.
She had been living in a one–room apartment for a year before getting married.
Hence, it had been lying is the right usage

Correct Option: A

had been lying will replace had laid because – a time period has been specified in the sentence.
Hence, Past Perfect Continuous Tense will be used.
Look at the examples given below :
We have been painting our house since last Friday, but we are still a long way from finishing.
She had been living in a one–room apartment for a year before getting married.
Hence, it had been lying is the right usage

survey will be replace surveying because – to in the phrase with a view to is a Prep. and an Inf. cannot be its object. It requires a Gerund (– ing form).
Hence, with a view to surveying is the right usage.

Correct Option: B

survey will be replace surveying because – to in the phrase with a view to is a Prep. and an Inf. cannot be its object. It requires a Gerund (– ing form).
Hence, with a view to surveying is the right usage.

an will replace the because –
no particular incident is evident.
Hence, when one hears of an incident is the right usage

Correct Option: A

an will replace the because –
no particular incident is evident.
Hence, when one hears of an incident is the right usage

neither of/either of agrees with Singular/ Plural Verb.

Correct Option: D

neither of/either of agrees with Singular/ Plural Verb.

know/have known will replace have been knowing
know is not used in Continuous forms.
Hence, we know/have known is the right usage.

Correct Option: A

know/have known will replace have been knowing
know is not used in Continuous forms.
Hence, we know/have known is the right usage.