It ________be the vocabulary that caused you the problem in the exercise because you know a lot of words. (2013·安徽,34)
The old couple often take a walk after supper in the park with their pet dog ________ them.
Michael put up a picture of Yao Ming beside the bed to keep himself______of his own dreams.
Before driving into the city, you are required to get your car ________.
Let those in need ________ that we will go all out to help them.
I looked up and noticed a snake ________ its way up the tree to catch its breakfast.