The latest NPR Sunday Puzzle aired on May 1st

I'm going to give you some four-letter words. Name a capital city that conceals each word in consecutive letters.

 

(*picture source: https://www.dailymail.co.uk/sciencetech/article-7399879/European-capital-cities-dominate-list-worlds-FASTEST-public-transport-systems.html) 

Example: THEN --> ATHENS

1. OPEN

2. QUIT

3. SINK

4. PEST

5. LUMP

6. DISH

7. TO-DO

 

ANSWER KEYS

1.  Copenhagen

2.  Quito

3.  Helsinki

4.  Budapest

5.  Kuala Lumpur

6.  Mogadishu

7.  Santo Domingo