Williams shows some challenging means ________ diners at their mystery lunch on Sunday might eat the special dish.
A．after which B．in which
C．by which D．for which
That scientist ________ work is successful has been made a model worker.
A．which B．who
C．that D．whose
Many athletes are clear that the Olympic Games are the only time ________ they will be watched by thousands of millions.
A．that B．which
C．where D．when
The old man often looked back on the past days ________ he worked hard to make a living.
A．which B．when
C．where D．that
Recently I have bought an iPad 3 on the website of taobao. com, ________ the price is very reasonable.
A．on which B．in which
C．of which D．from which
Have you ever seen any trees ________ leaves were black because of the polluted air?
A．whose B．that
C．which D．who
