Some insects __________ the color of their surroundings to protect themselves.
A．take in B．take on C．take over D．take off
We promise ________attends the party a chance to have a photo taken with the movie star.
A．whoever B．whom C．who D．whomever
The girl was frightened at the sight of a snake and her heart was _______ fast.
A．striking B．hitting C．jumping D．beating
The villagers have already known_________we’ll do is to rebuild the bridge.
A．this B．that C．what D．which
Come and see me whenever________________.
A．it is convenient for you B．it will be convenient for you
C．you are convenient D．you will be convenient
The system has been designed to give students quick and easy_______ to the digital resources of the library.
A．approach B．passage C．way D．access
