John is too stupid_______ understand this.
A. to
B. not to
C. to not
D. for
Chọn đáp án A
_______able to take part in the international math contest two years from now, Son works very hard in his math lass.
I told her_______ about her wedding; everything will straighten out.
The young teachers wanted a Foreign Language Teaching workshop _______ in Ho Chi Minh City.