1 to be connected

2 traffic

3 transportation

4 communications

5 liaison

1 population

2 people

1 to use as an excuse

2 on the pretext

3 excuse

4 pretext

1 wound

2 cut

1 entrance

2 to import

1 lit. doesn't (even) enter a single aperture (of one's head)

2 I don't understand a word (idiom)

3 it's all Greek to me

1 grasp this fundamental point and all the rest will follow (idiom)

1 (idiom) reluctant to speak about it

2 tight-lipped

1 not to be crushed (idiom)

2 to be determined to have one's revenge

1 to act in collusion (idiom)