be

Who should be responsible ___ the staff’s absenteeism?

Tom is ____ by his supervisor to be the teaching assistant in his department

The amendments of the constitution will be ______ from Christmas.

-- Marilyn, I'm afraid I have to be leaving now. _________________________

— Must I be home before seven? — ___________________.

____________ a marked difference between right and wrong can be very important in one’s career.

边长b =100 mm 的正方形均质板重400N，由三根绳拉住，如图所示，当AD和BE两绳运动到铅垂位置时，AD 绳的张力（   ）。

边长b =100 mm 的正方形均质板重400N，由三根绳拉住，如图所示，当FG绳被剪断的瞬时，BE绳的张力（   ）；

Tom is so talkative. I'm sure you'll soon be familiar _______ him.

It has been _______ that Mary and Tom’s wedding will be held next Sunday