Knowledge and learning are important if we want to be successful, but they may also  __________ our thinking.

This is not a typical summer camp, but Michelle is glad she _______ it.

Mr. Brown’s condition looks very serious and it is doubtful if he will ________.

Thousands of people turned out into the streets to ________ against the local authorities’ decision to build a highway across the field.

 Traditionally, local midwives would ________ all the babies in the area.

–Excuse me, Madame. Is this plane __________ take off soon?
–Oh, yes. In five minutes.

Barrack Obama __________ President of the United States since 2010.

I can’t believe you got fined for speeding．I       of you to be the most careful．

They__________on the program for almost one week before I joined them, and now we ________on it as no good results have come out so far.

He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.