The teacher said that light ________ faster than sound.
#42199
A
travel
B
to travel
C
traveled
D
travels
推荐题目
My brother came back home while I           homework.
#36261
A
am doing
B
did
C
was doing
D
were doing
Sam’s cousin ______ a programmer. But he changed his job last month.
#40024
A
has been
B
is going to be
C
is
D
used to be
 What ____ she ____ on weekends? 
#38643
A
is, do
B
does, does
C
do, do
D
does, do