the students put down their pens when the teacher ______ the
the students put down their pens when the teacher ______ the
The students were reviewing their lessons when the teacher c
The students were busy doing their()when the teacher entered
The students _____ their homework when the teacher came
When the teacher came into the classroom,the students ______
( )do the students ( )their teacher?
When the teacher came in ,the students stopped ______(talk )
the students ______ at their teacher该填什么?
Teacher ( ) their students the right way
When the teacher talked ____ the students,they kept their ha
Not only the students but also their teacher ______ at the m
they were talking to their teacher.I saw the students.(用when