I knew ______ John Lennon, but not ______ famous one. (2005 Shandong )
Taking care of children calls for your time, abilities, patience and emotions. _____, it is not a simple thing.
All the members of the WTO should follow the ______ of trust and fair(公平) trade.
In our class there are 46 students, ______ half wear glasses.
Tom took a taxi to the airport, only ______ his plane high up in the sky.
New technologies have made ______ possible to turn out new products faster and at a lower cost.