Which shortcut key is used to create a new folder in MS

The puzzle that we _________ today was quite a hard _______ to crack.

She would ________ the thought of writing a 40-page research paper.

Which conjunction can be used for this sentence?

Always listen to your heart because _________ it's on your left side, it's always right.

I have given her ______.

The ________ between the two nations resulted in years of peaceful relations.

Even when we have crossed the so-called herd immunity threshold for preventing epidemic spread, disease _____________ will continue in an endemic form.

As Nitya became ill, errors began to creep ________ her work. 

Jaya has been learning Bengali ________ five months.

Fill the Blanks.