What’s the main idea of the passage?

(单选题)How long do you think ______ the car factory launches a new (单选题)Mr. and Mrs. Green would like to see their daughter ______, (单选题)I still have some sweet memories of my childhood. ______, I (单选题)Bob belongs to that club, whose members meet ______ to share (单选题)There have been many ______ in their marriage but they still (单选题)—Will Ms. Smith go to the opening ceremony this weekend?—No, (单选题)______ it rain tomorrow, we would have to put off the visit (单选题)There must have been a large number of tourists in Sanya las (单选题)“Genius” is a complicated concept, ______ many different fac (单选题)—It’s my treat today. Is there anything particular you would