English Grammar and Usage

As time period is mentioned, the sentence is in present perfect continuous.

(Is) + (reading) clearly indicates that it is in present continuous tense.

The past indefinite form changes to was/were + third form of the verb.

'Will be leading' Case of will/shall + be + V1 + ing

Should will be converted to should + be in the passive voice.

'Does' changes to 'is' in the passive sentence. 'Who' changes to 'by whom'.

'Liking' is a gerund here as it indicates the object of a sentence. Hence, option 3 is the correct answer.

It is the correct answer as per the sequence of tenses. Simple present goes with  future perfect tense in conditionals.

An implicit comparison between the earlier condition of the patient and his present condition is mentioned here. Comparative degree of adjective is required. So, option 4.

To fill the given blank, we need an adjective. Only option 3 provides the same.

Too implies a negative result. Very implies a positive result. “Too cold” would be correct if the weather were to be rendered unsuitable for a purpose. Example: It is too cold to go out today. Unless the unsuitability is borne out, the usage will remain “very cold”, which indicates only the intensity, not the unsuitability.

The Present Perfect Tense is used to describe an action that has just finished.

The given sentence has “had + 3^rd form of the verb” so, it is Past Perfect Tense. 

The given sentence refers to Past Tense as is indicated by the phrase “last week.”  Answer: (3)

Here, the sentence presents an imagined situation of the past and we use would/could have to tell about the outcome if things had been according to the imagined situation.