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

下列各句中，没有语病的一句是（ ）

Three mountains, Meili, Baimang and Haba, _____ are covered with snow, tower over the land.

Ang Lee won the Best Director Oscar at the 85th Academy Awards Ceremony.—But when he was young, no one could have imagined how well he ____ in the world of entertainment.

He is very smart, but he is not enough. That’s why he is afraid of the exams.