21. In the summit, Herman Van Rompuy was elected ______ chairman of _______ European
Union.
A. the; 不填 B.不填; the C. a; the D. 不填；不填
22. Yes, ______ is difficult to find a job nowadays, but _______ is more difficult is trying to find such a job with a high salary but few things to do.
A. it, it B. what, what C. it, what D. what, it
