It was 1920 ______ regular radio broadcasts began.
#32553
A
while
B
when
C
that
D
since
推荐题目
Mike resembles his mother in appearance _____ his personality follows his father's.
#31799
A
who
B
which
C
while
D
where
______ wants to enter the company must show his ID at the entrance.
#32752
A
Anyone
B
Whoever
C
Who
D
The one
There is a high probability _________ you will find aspirin and penicillin in any medicine cupboard in the world.
#34801
A
that
B
which
C
what
D
where
Follow your teacher’s advice, __________ you will catch up with your classmates.
#34813
A
or
B
and
C
as
D
but