.Frankly speaking, it’s people’s ________ to keep their promise that really annoys me.
There is ________ in population that a food shortage is caused.
________ with the other students, the girl has better listening and speaking ability.
He always helps us ________ he is doing when we turn to him for help.
—How many photos have you taken? —I’ve taken 60 ________. I’ll take more.
With the popularity of network, email has largely ________ the traditional letter.