_______ is known to all is _______ Diaoyu Island is part of China.

The reason why she came here late this morning was        she had to look after her sick daughter.

Honesty is a basic element in friendsmaking and that is ________ it requires to keep everlasting friendship.

He was seriously injured last week and that’s _______ he didn’t participate in the competition. 

Xiao Ming practises his spoken English once there is a chance and that is_________ it takes to live his dream to be a good guide．