In public places, could you please pay __________/ ‘ten()n/ to your behavior

Many people can’t learn any lessons from the mistakesthey’ve made _____ they get hurt somehow.

Though Han Mei has studied _______at English for several months, she can still______speak it .

I like to go shopping at the weekdays,_____the shop isn’t crowded. 

k during the week, but weekends and evenings are usually____.