complete the setences using the correct verb tense.

a)technology.........(chnage) very fast. Things never..........the same (stay).

b)Our country.........(produce) a lot of food, but still many people........(starve).

c) Lucy.......(study) English evey day. in the beginning, she wasn't doing well but now she........(improve).

d)My mother..........(see) anothet doctor, that's why she.......(feel) a lot better.

e)As mankind.............(destroy) the environment, clean water is...........(become) more and more valuable.​