شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 13176

Regarding the usage of “on” as a preposition of time, which sentence is grammatically WRONG?

All of the following facts about dinosaurs are True EXCEPT that … .

Last night I dropped a plate while I … the dishes. Fortunately I didn’t break it.

The school puts a lot of … on using creative ways in teaching children how to read and write.

While I … for my final English exam yesterday, my brother … fun with his friends.