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 precious

1 a person who doesn't manage a household would not be aware how expensive it is (idiom)

1 lit. speed is a crucial asset in war (idiom)

2 fig. swift and resolute (in doing sth)

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 cling to the powerful and rich (idiom); social climbing

1 lit. to cling to the high, connect to the rich (idiom); to try to attach oneself to the rich and powerful

2 social climbing