---Tom, why not stop ________ a rest?--- Oh, no, Mum. It’s so exciting that I can’t stop ___ the kite.
-----Lin Tao’s spoken English is very good. ----- _______. He often talks with foreigners.
I have _______ to tell you.
Teachers’ job is ______ the students learn well.
Students ought ______ the truth.
I can’t stand _____ for you so long.