We know that about seventy percent _____ the earth _____ covered by water.
#44426
A
/; is
B
of; are
C
of; is
D
about; are
推荐题目
Please don’t stand up in class _____ you ______.
#44549
A
until ; are told to
B
when ; are told
C
after ; were told
D
before ; were told to
— What a nice watch it is! — It's my birthday present. It in America.
#44480
A
make
B
makes
C
is making
D
is made
--- Many trees around our school last spring.---The more trees, the better.
#44428
A
were planting
B
planted
C
were planted
D
are planted
—Excuse me, what’s this for?—It’s a cleaner and it to pick up dirt.
#45057
A
uses
B
is used
C
is using
D
used