Listen! David is talking happily with his mother in the next room. — It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.
On weekends, I often go to movies _____ my friends.[ ]
I have no ideahis proposal was turned down by the committee. —Me, either.
We can’t put off _____ a plan .
Both teams were in hard training, _______ was willing to lose the game.