Tiring as it might be, the military training ______ the best opportunity to make lifelong friends.

He could speak English fluently because he __________ it for four years when he was a college student.    

-Have you heard about that fire in the market?-Yes, fortunately no one ______.

 —Hi, Li Ming. Where are you going?—Oh, it’s you—Xiaohui. I ______ you.

I _____ Ping –pong quite well, but I haven’t had time to play since the new year.