A
．
must be sent
B
．
would be sent
C
．
be sent
D
．
will be sent
6
．
Mrs. Brown is considering _______________ the house before the prices go up.
A
．
buying
B
．
of buying
C
．
to buy
D
．
about buying
7
．
No sooner had Mary arrived at the station ________________ the train left.
A
．
until
B
．
then
C
．
when
D
．
than
8
．
The new highway in the area is reported ________________ within four years.
A
．
completing
B
．
to have completed
C
．
having been completed
D
．
to have been completed
9
．
The question _______________ at present is of great importance to us.
A
．
to discuss
B
