______ he came in, I was having lunch.
A: While
B: When
C: Since
D: For
A: While
B: When
C: Since
D: For
举一反三
- The Greens _______ lunch when I got to their house . A: were having B: was having C: are having D: is having
- He went out for a walk, ____ I stayed at home. A: while B: when C: until D: since
- ______, my father came back home. A: While I was reading the book B: When reading the book C: Having read the book
- I was about to leave my house ______ he came. A: while B: as C: C. when D: D. since
- I haven't heard from him _____ he went abroad. A: When B: Before C: While D: since