－How was your interview today?－I made it! It was extremely crowded，but I had the　    　of　interviewing the famous writer in the end.

—What’s your favourite _______?—Science. Because I want to be a scientist in the future.

Could you please give me ________? 

 I listened to Professor Chen-Ning Franklin Yang’s lecture about his study and physics, but I failed to get its key ______ .

He will come to understand your efforts sooner or later. It’s just a matter of _____.