a hard nut

As we all know, Our boss is a hard nut to crack, every time we want to ask for a leave, he simply says no, whatever reason you might have.

But short life & expensive cost of the reduction jar used for the technology risen late, Pidgeon method, have been a hard nut to crack.

Wendy is such a hard nut to crack , I've seen her around the office for two years , but I still don't really know her .

"That's a hard nut, " said the teacher, giving me a sidelong glance over his glasses.

However, the fact that the burning of motors is not uncommon involves to be a hard nut for farmers.

My manager is a hard nut to crack. He always shouts at me about what I have done.

I never know Bill very well. He was not very communicative and always seemed to me a hard nut to crack.

They found it a hard nut to crack.

All the candidates are very excellent. It's indeed a hard nut to crack to choose the best one.

Want him to follow your order? No way! He's a tartar - a hard nut to crack.

It is a hard nut to crack that there are many needy students in Chinese universities when China is building a harmonious society.

How to utilize the six Olympic venues appropriately will be a hard nut to crack for the Beijing government and the six universities.

Teaching Chinese as a foreign language in there is a grammatical sentence, the focus of teaching is also a hard nut to crack.

The problems were a hard nut, but we managed to cope.

Although very familiar with, but what is a hard nut to crack, I looked up and saw the clouds look thin.

I'll get the information from him eventually but he's a hard nut to crack and it may take a long time.

s surely a hard nut, nobody likes approaching him.

He's surely a hard nut, nobody likes approaching him.

Strong in character and deep in thought, he is a hard nut to crack.

How to define a constitution is a hard nut for the legal community to crack.

He is surely a hard nut, nobody likes approaching him.

e. g. Mary found knitting a hard nut to crack.

It is a hard nut to crack to persuade him into doing it.

The math exam is a hard nut to crack.

It's really a hard nut to crack.

At the same time, in the VB player was originally a number of audio files is a hard nut to crack.

A hard nut to crack and find!

Speaking English very well is a hard nut to crack to most Chinese people.

It's really a hard nut for us to crack.

He is not only a troublemaker but also a hard nut to crack.

if you have a hard nut to crack, you can turn to friends for help.

Crikey, is he a hard nut to crack. I don't think he watches MLS.

Territory Dispute Between Russia and Japan: Why a Hard Nut to Crack

So I think this is a hard nut to crack