We were cleaning the classroom _______ the teacher came in.
A: when
B: so
C: but
D: and
A: when
B: so
C: but
D: and
举一反三
- 4. The students ________ (read) the textbooks in the classroom when the teacher came in.
- Our teacher came in the classroom so we stopped _____ and _____ what the teacher said.
- The two students were quarreling with each other the teacher came in. A: when B: as C: while D: then
- Hardly _________ the bell _________ when the teacher came in.
- Thestudents ____________ (read) English when the teacher came in.