The reason why she had a headache was _______ she had been reading for too long.
The new system in our school allows students to have easy and quick_________ to the digital resources of the library.
_________ persons from all walks of life are trying their best to make ________ better ZheJiang.
Once a schedule is made, only by strictly ________ it, can we avoid putting off till tomorrow what should be done.
_______ he lain quietly as what the doctor had said, Tom __________ so much now.
At present, even selling newspaper and magazines will make a very good .