27．Many students were watching the story of the heroes from Changjiang University on TV, ________ moved to tears.
| A．all of them | B．all of whom | C．all of that | D．all of which |
. It _____ Mary and Tom that often helped me at school.
| A．was | B．were | C．are | D．is |
I wonder ____ you were doing last night.
| A．it was what that | B．what was it that | C．that what it was | D．what it was that |
It musk be he that has stolen Mr. Smith’s purse. __________?
| A．Hasn’t he | B．isn’t he | C．mustn’t it | D．isn’t it |
—Do you have the new Chinese-English Dictionary?
—Yes, but no more than one copy Would you like to take ____?
| A．some | B．it | C．any | D．one |
Meeting my uncle after all these years was an unforgettable moment, __ I will always treasure.
| A．that | B．one | C．it | D．what |