_________, he is still as modest as before, which always moves all the people who know him.

the unreasonable individual income ­_______,the gap between the rich and poor has become an outstanding issue.

–Hey! Any idea about learning abroad–You _____google the College Board to learn the namesof college you ____ be interested in

Are you allowed ______ the hall at this time—Sorry, I’m afraid not.

Mary dropped in ____ Mr Smith, but he wasn’ t at home, so she went to drop in ____ Mr Smith’s office