D Words are Do, Does, Doing and Did. While Do and Does are present, Did is past tense. You can use “Doing” anywhere if the action is /was happening.
- Do you smoke?
- Does she smoke?
- Did she smoke?
Let’s check them!
- I ______ not know when she can be discharged.
- We _____ not admit such patients.
- _____ he live alone?
- ______ she got a divorce?
- It ______ not matter.
- The cost of medicines _____ not bother him.