Yuan Longping is a great scientist ______ was honored as "The Father of Hybrid Rice".( )
A.whenB.whoC.whichD.whose
--Sorry, I overslept. I forgot to set the alarm.--Your clock ________. Perhaps you should buy a new one.
Be quick, we’ll be late for the meeting.
I still remember my first teacher __________ we haven’t seen each other for many years.
They have been friends __________ they were at primary school.
I’ll go to visit my uncle in England ________ the winter holidays start.