That man over there _____ be Mr Wang . He has gone to Yushu. 

―Do you know where David is? I couldn’t find him anywhere.―Well. He ______ have gone far — his coat’s still here.

—Must I take the medicine every day?— No, you______.

Sometimes we have much homework to do, but not often. Anyway, it ______in time.

— The Queshi greenway has become a popular place for Shantou people on the weekends. — That’s right. And you ________ drive your car on it because it is a path for cycling and walking.