1.

When the principal visited the laboratory, a group of students was still conductingthe experiment. The teacher was solving problems of some students. Some studentswere writing their journals. The lab peon was arranging things in the cupboard. Allwere busy.​

Answer»

Answer:

When the PRINCIPAL visited the laboratory, a group of the students were STILL conducting

the experiment. The TEACHER was solving the problems of some students. Some students were writing on their journals. The lab peon was arranging THINGS in the cupboard. All were busy.​

Explanation:



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