21. It does not alter the fact that he was the man ________ for the death of the little girl.% f6 x/ f/ v- z
A) accounting B) guilty C) responsible D) obliged; u i: ]5 \& I" H; I
22. Medical care reform has become this country’s most important public health ________.& X8 l6 `3 _7 @6 o; j
A) question B) stuff C) matter D) issue 3 [- g+ S5 Z; ]23. Not that John doesn’t want to help you, ________ it’s beyond his power.* R0 o4 X' `% F% M
A) but that B) for that C) and that D) in that $ P" q/ C* Q: C/ |, O/ Q! f+ u3 M. f24. I used to smoke ________ but I gave it up three years ago. ! A( C8 |% V/ G6 T pA) seriously B) heavily C) badly D) severely2 J- w3 l3 J, N5 o; s$ |6 {
25. The doctor told Penny that too much ________ to the sun is bad for the skin. Q2 ^( {7 _: x+ x$ ^9 R
A) exposure B) extension C) exhibition D) expansion 7 E: I# M. m3 U: y2 Q+ m21-25 CCABA