I couldn’t follow what he said _______, but at last I understand. 
#46617
A
for the first
B
at first
C
the first
D
at the first
推荐题目
You can call Gina ____  6828799. That’s ____ telephone number.
#49294
A
at, she
B
in, his
C
at, her
D
on, he
We should play a part in ______ the earth.
#46449
A
Save
B
to save
C
saving
D
saved
_____, do you know where the nearest post office is?
#46585
A
By the way
B
On the way
C
In the way
D
To the way