make effort / make an effort
با سلام و خسته نباشید خدمت شما این جا نباید article استفاده کنیم؟ توی درس بدون article استفاده شده. That is why I always make effort to keep in touch with people I have become close with. That is why I always make an effort to keep in touch with people I have become close with. خیلی ممنون و متشکر