There’s no way of knowing why one man makes an important discovery another man, also intelligent, fails.
#39533
A
since
B
If
C
as
D
while
推荐题目
There _______ a football match next week. Shall we go and watch it?
#42202
A
is going to have
B
is going to be
C
will have
D
have
You can try_______ second time if you fail_______ first time.
#38288
A
the; the
B
a; the
C
the; a
D
a; a
