is will replace are because –
When Subjects are joined using along with, as well as, together with, the Verb agrees with the first Subject.
Singular Subject ® Singular Verb (is)
Plural Subject ® Plural Verb (are)
Hence, is practising very hard is the right usage.

Correct Option: B

is will replace are because –
When Subjects are joined using along with, as well as, together with, the Verb agrees with the first Subject.
Singular Subject ® Singular Verb (is)
Plural Subject ® Plural Verb (are)
Hence, is practising very hard is the right usage.

Supposing that/If will replace Supposing if because –
Supposing and if cannot be used together.
The basic structure is as follows :
Look at the example given below :
Supposting that he denies, what will happen ?
If it rains heavily, what will happen.

Correct Option: A

Supposing that/If will replace Supposing if because –
Supposing and if cannot be used together.
The basic structure is as follows :
Look at the example given below :
Supposting that he denies, what will happen ?
If it rains heavily, what will happen.

hard will replace hardly because –
hard : putting a lot of energy into an activity
hardly :almost not/no/none
Look at the examples given below :
He is a hard worker.
We hardly know each other.
Hence, He works hard is the right usage.

Correct Option: A

hard will replace hardly because –
hard : putting a lot of energy into an activity
hardly :almost not/no/none
Look at the examples given below :
He is a hard worker.
We hardly know each other.
Hence, He works hard is the right usage.

would will replace will because –
in a Conditional Sentence the format is as follows :

Correct Option: C

would will replace will because –
in a Conditional Sentence the format is as follows :

to will replace than because –
to (Prep.) is used for denoting comparison and with superior, junior, senior, etc.
Look at the examples given below :
I prefer walking to climbing.
We won by six goals to three.
Hence, is junior to is the right usage

Correct Option: B

to will replace than because –
to (Prep.) is used for denoting comparison and with superior, junior, senior, etc.
Look at the examples given below :
I prefer walking to climbing.
We won by six goals to three.
Hence, is junior to is the right usage