He spent too much time talking on ______ phone while we were all busy at _____ work.
The wounded ____ as well stay at home on such a terrible day.
______ in the novel, I didn’t notice what was happening.
I am sorry that I can not meet you at the railway station. I _______ Beijing by the time you come back from abroad.
The thief looked around every now and then _____ he knew he was being followed.
He insisted ______ alone in the mountain.