It is strongly ______ that the machines should be checked every year.
A. recognized B. recommended
C. recorded D. recovered
--Can I help you with the heavy bag?
--______.
A. Thank you. B. It doesn't matter.
C. No, I am all right. D. Really?
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
