Computers in offices and homes since 1970s．
A．have been used B．had been used C．was D．has been used
More attention must be paid the endangered animals..
A．protect B．to protect C．to protecting D．protecting
She doesn’t like the way _______ you speak to her.
A．to B．in that C．how D．in which
The young man helped the company recover, so his boss gave him an apartment _________.
A．in return B．in turn C．in charge D．in fact
__________, he caught up with others.
A．With the help of the teacher’s B．With the teacher’s help
C．By the teacher’s help D．On the teacher’s help
This book _________12 units, _________ the unit of Music.
A．contains, including B．includes, containing
C．contains, includes D．including, contains
