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
Either you or one of your students _________ to attend the meeting that is due tomorrow.
A．are B．is C．have D．be
___________ certain that his invertion will lead to the development of production.
A．That’s B．This is C．It’s D．What’s
