__________ important for children __________ on themselves.

They became friends again that dayUntil then they ______to each other for nearly two years

What’s her phone number——________ 010-887578.

(2013·湖南长沙四校二模)—Is the letter from your mother?—Yes.But she ________the letter herself，because she doesn’t even know one word.

He always ________ his friends about everything. In fact, he has no thoughts of his own.