How about your journey to Mount Emei?— Everything was wonderful except thatour car____ twice on the way. [ ]

You can use MSN to talk with Vivien on the Internet. — I know. But can you tell me ________

下列各句中，表达得体的一句是

Whenever I go to Beijing, ____ is quite frequent, I will go to visit the Great Wall

下列各句中，没有语病的一句是