16.He asked me to do the work. I am afraid,__________, that I am not able to do it.
A. whatever
B. nevertheless
C. however
D. wherever
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17.It's so hot that I can't__________it any longer.
A. standard
B. stand
C. fight
D. put up
18.She is__________with his son's progress.
A. satisfy
B. satisfaction
C. satisfactory
D. satisfied
19.I knew his wife was very__________with him about his drinking.
A. rude
B. strike
C. impolite
D. strict
20.The group__________three women and five children.
A. made up
B. included
C. formed
D. excluded