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
One Friday,we were packing to leave for a weekend away my daughter heard cries for help
#30618
A
after
B
while
C
since
D
when
All the photographs in this book, _______ stated otherwise, date from the 1970s.
#31571
A
until
B
once
C
if
D
unless
The number of private cars in urban areas should be limited ___________the number of public buses should be increased.
#31434
A
when
B
while
C
unless
D
until