— How about going hiking this weekend? — Sorry, I prefer rather than .
It has been five days ______ the little girl left home. A. since B. after C. until
The man makes a living teaching. A. for B. with C. by
The only language ____ is easy to learn is mother tongue.
It is well-known that such a thing must ________ happening again.
-I wonder if your wife will go to the party. -If your wife ____ ,so _______ .