People often find themselves caught in such a _____ as “whether…or not…”.

The study shows that the ________ scenes in movies and TV are harmful ________ children.

He does ___________________ that he cannot spare no time to play with his children.

Although Tan Weiwei began her_______by singing in a local Ear, she is now a famous star.(成都市)

He presents a new _____ to learning a foreign language, which I think is of great value.