I won't go to his party next time. It couldn't have been ________ in fact.
—Will you give this bag to Mr.Li?—Sorry,I can't. He________.
Usually I don't allow________in my office,but yesterday I allowed him________ here.
The people from the south enjoy the________in the north during the winter because they have never seen snow before.
The hunter________that tiger,but luckily,it avoided________.
The new teacher referred to________to our school yesterday.