Miss Liu .when did you come here—-In 2012. I______here for four years.

His father seldom goes shopping,_______

Shall I tell him about the change of the timetable right now—I am afraid you ________, so that he will not come late for the meeting.

Peter has been busy these days and seldom ____ to come over to have a chat with me

Doyou happen to have twenty dollars on you —______ —I want to buy a reference book