I’ve already told you that I’m going to buy it, ________.
A. how much does it cost B. no matter how it costs
however
does it cost much D.
however much it costs
They pretended ________ hard when their boss passed them.
A. to work B.
being worked 
to be working D.
working
— Mary, let’s go to the lecture by Hawking, which is said to be very interesting.
— I’d like to, but I ________ finish the report first.
A. can B.
may 
must D.
shall
After being broadcast on TV, the news was known by all ________.
A. at any
time B. in no time 
all
the time D.
at one time
It occurred to me ________ Jack might be interested in the problem we had discussed.
A. what B.
why 
how
much D.
that
Mary wrote books to earn money while John gained his wealth ________ selling Mary’s works.
A. with B.
by 
on D.
through
