—Oh my god! You__ wear slippers to attend the conference． —I'm sorry I forgot there is a conference．

Our English teacher recommended that we ________ an English dictionary.

—The problem wasn’t difficult for him,was it?—No,it wasn’t.He      a more difficult one.

Mr．White         to hospital for an examination yesterday but he was too busy to come．

—Why are most of us unable to study English well，Mr.Li?—You ______.But you ______ too little attention to it.