—Hurry up! The bus is coming.—Wait a minute. Don’t cross the street        the traffic lights are green.
#57340
A
until
B
after
C
while
D
since
推荐题目
 Which of the following is RIGHT? 
#55520
A
In the early 19th century, the first trains began to carry passenger.
B
Dinosaurs lived on Earth more than 60 millions years before human beings.
C
The king ordered his men to collect a bag of rice.
D
There are many tiny computers around us, and we dependent on them nearly every day.