All over the world the mobile phone has leaped from being an impossible luxury in the early 1980s to most people would now call a necessity.
#33171
A
which
B
that
C
what
D
when
推荐题目
Hard _____ he tried, he failed to catch up with the first runner.
#32786
A
although
B
as
C
while
D
when
The woman was about to open the door ____________ she heard a strange sound from inside.
#32002
A
as
B
while
C
when
D
then
We’ll have a picnic in the park this Sunday _____ it rains or it’s very cold.
#79756
A
since
B
if
C
unless
D
until
________ the fire breaks out，he is the first to arrive at the scene.
#30229
A
Every time when
B
Moment
C
No matter whenever
D
Every time