What did you do yesterday? 应该用升调，因为它是问句。
举一反三
- --___________________?--We went mountain-climbing. A: What did you do yesterday? B: What will you do tomorrow? C: How did you go yesterday? D: How will you do tomorrow?
- What did you do after _______ school yesterday?
- What did you do after _______ school yesterday? A: a B: an C: the D: /
- What ____ you ____at this time yesterday evening A: was; doing B: did; do C: were; doing D: have; done
- What _____Linda do yesterday? A: is B: am C: did D: are