_____ about Lucy, the teacher called her parents to find out why she was so often absent from class.
——Did Tom come back late last night? ——No. It was not yet 8 o’clock ____ he arrived home.
Our school has about 100 computers, but only sixty percent ____ used regularly.
Imagine how excited we were ____ that our schoolmates had been admitted to some famous universities.
Mum, I need a new schoolbag. Could you buy _______ for me tomorrow?
On March14, 2013, Xi Jinping was elected_______ president of _______ People’s Republic of China.