The more one is ________ the Englishspeaking environment, the better he or she will learn the language. [ ]

下列各句中，没有语病的一句是（  ）

There is no need for you to look up every new word you ______ when reading. You have to learn how to guess the meanings of new word according to the context. [ ]

Excuse me, sirWould you do me a favor? — Of courseWhat is it? — I _____ if you could tell me how to fill out this form

edly, yesterday a group ofAmerican soldiers were walking along the road in Iraq when a bomb was _______,three of whom were killed．