We can t emphasize ______ the importance of air and water for the survival of all species.

I’m not sure whether we can gain any profit from the（invest) ___________.

From the passage we can learn that the speaker ______.A．is unprepared for the new post.B．i

From the passage we can conclude that the U.S. has come to realize______.A．the weakening i

We can infer from the passage that______.A．offensive breath can"t easily be curedB．elderly

From the conversation we can see that the man is______to （with) the woman.A．indifferentB．i

We can’t _____ one to change the habits of a lifet