I get the two of them mixed up       ; they are so similar.
#26558
A
at one time
B
at no time
C
in no time
D
all the time
推荐题目
   Standing on top of the mountain, we watched the sun ____ the horizon.
#27575
A
sink below
B
sinking under
C
sinking below
D
sink under
It is amazing that the little boy can swim ______the river ______100 meters wide.
#25918
A
across; measuring
B
over; measured
C
across; to measure
D
through; measuring
The weather this month has been good ________ . 
#28840
A
on the whole
B
generally speaking
C
above all
D
on one hand