The government has to close those small factories to prevent the water of the river ______.
— Flight MU257 ______, I must be off now.— Have a nice trip.
I admired my classmate Lisa very much. _____ her prettiness, she was smart and helpful.
Look, the book still ____ where I ____ it the other day.
I wonder what’s your attitude ____ the problem ____ yesterday.
At the evening party the host said ______ was able to solve the riddle could get a nice present as a reward.