These words that we should pay attention to on the blackboard.

Manysingershaveopenedtheirmicroblogs,_______theyshareideasandfeelingswiththeirfans [ ]

The new supermarket in our town _______ for two weeks, but I _______ there yet.

Children’s brains can’t develop properly_______ they lack protein(蛋白质).

_____ Lily _____ Lucy may go with you because one of them must stay at home.