At times, parents find _______ difficult to talk with their teenage children.
— Have you finished your project? — Not yet. I’ll finish it if I ten more minutes.
---Who teaches ______English --- No one . I teach _____at home.
There ______ a number of books on the bookshelf. And the number of the books ____ 50.
He his baby every day because his wife is very busy.
---_______ do you write to your e-friends? --- Almost twice a month.