She often shares her deepest thoughts and fears with friends through QQ, as if they ________ chatting in her living room.
It is the protection for the trees _______ really matters, rather than how many trees are planted.
It is _______ he often fails in exams ______ makes his parents worried about him.
Who are making so much noise in the garden? —_______ the children.
It was lack of money, not of effort, _____ defeated their plan.
It’s more than half a century _____ my grandfather joined the Party and became a servant to the people.