---Try to remember to turn off the light when you leave the room. ---I’m trying to expenses.
289. Our victory in the school sports meet resulted from the collective__________of all the classmates.
288. My eldest sister was left these jewels in my grandmother’s deathbed.
287. The clear colorless liquid that falls as rain, fills lake and rivers, and is necessary for life to exist is______.
286. In 1920 Poland and Russia were still at _______and they mustn’t trade in agricultural products with each other.
285. In the hotel semi-skilled workers include chambermaids (客房女服务员) and______ or waitress, who must have training for their particular duties.