As a teacher, he is not only strict _____ his students but also strict _____ his work.
I have no doubt _____ __he can do the job well though he doesn’t like it.
---Hey, Mr. Smith, you are wanted on ___ phone.-----Who is calling?----- ___ Mr. Green. I do not know who he is.
Is this the factory ______ my father visited last year.
They are ______ at the _______ news.
Only by working hard , _______ .