Most Common Compounds Set 1:
Most Common Compounds Set 2 :
| Intermediate -Advanced: 2864 (verb: to cooperate, to work together)  Let's work together.  Lassen Sie uns zusammenarbeiten.  Hãy hợp tác lên. |
| Intermediate -Advanced: 2864 (verb: to cooperate, to work together) Let's work together. Lassen Sie uns zusammenarbeiten. Hãy hợp tác lên. |