—Peter，is there anything else you want to know about China?—Yes，I am still wondering __________ .

 Some children want to challenge themselves by learning a language different from _____ their parents speak at home.

–Excuse me, could you tell me             ？-- Go along this street until you see some buildings with golden roofs. 

After _____ seemed an endless effort, the patient was finally able to carry out _____   seemed a perfectly normal walk.

 In this institution a medal together with a prize of certain sum of money _______ gains success in science and technology every two years.