A herculean task is one which is-

If I thought I could--it,I wouldn't pay my taxes at all.

Call a spade a spade-

The term 'en route' means-

Let things slide-

Sophiophobia made me crazy,I was about to hit the roof.Here, "hit the roof" means-

He visit us now and again.Here,"now and again" means-

I am at sixes and sevens.Sixes and seven means-

Call to mind-

Knocking out means-

When I said that I would stop the vocabulary session,you guys pulled a long face .Here, Pull a long face means-

What does the idiom mean?He was always pulling my legs.

In high spirits-

After one's own heart-

You should make good the lose.Here, 'make good' means-

Hot potato-

The horror movie scared them out of their-

All at onec-

Stand up for-

If a man is "worth his salt" he is-

I hope you can account for the time you were out of doors.Here, account for means-