That tree, _______ branches are almost bare, is very old.
A. of which B. on which
C. in that D. whose
As a rule, domestic servants doing odd jobs are paid_______.
A. by hour B. by an hour
C. by hours D. by the hour
Why don’t you bring ____ to his attention that you are too busy to do it?
A. that B. what C. it D. which
He began to take political science ________ only when he left school.
A. strictly B. seriously C. carefully D. truly
People are talking about the new play in two weeks.
A. to be put on B. being put on
C. put on D. puts on
Old-fashioned phones matter when wireless networks __________ in disasters.
A. break out B. break up
C. break in D. break down
