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
