1 brain

2 cerebrum

1 tree trunk

2 main part of sth

3 to manage

4 to work

5 to do

6 capable

7 cadre

8 to kill (slang)

9 to fuck (vulgar)

1 what are you doing?

2 what's he up to?

1 what are you doing?

2 whatever for?

3 why on earth?

1 to work

2 to be employed

1 lit. like a three-meter high monk, you can't rub his head (idiom)

2 fig. at a total loss

1 to bury oneself in work (idiom); to be engrossed in work

2 to make an all-out effort

3 up to the neck in work

1 to poke one's head in and pry (idiom); to spy

2 nosy

1 to stick one's head out and look around (idiom)

1 to refresh and clear the mind (idiom)

2 invigorating

3 bracing