The illness of her son is so ______ that she cannot go to sleep at night.
#19152
A
satisfying
B
worrying
C
surprising
D
puzzling
推荐题目
 It was _____ opportunity to miss. 
#20654
A
too good an
B
a too good
C
too a good
D
too good
 He was ______ about his ______ son, who is always skipping classes.
#18824
A
worried, worried
B
worrying, worried
C
worried, worrying
D
worrying, worrying