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
Young trees should ________ every day.
#45076
A
water
B
watered
C
be watering
D
be watered
Neither Jam nor his parents _______ places of interest here since they came to China.
#44627
A
will visit
B
has visited
C
have visited
D
visited
 Can’t you see that sign? Taking photos _______ here. 
#44371
A
aren’t allowed
B
don’t allow
C
isn’t allowed
D
doesn’t allow
The computer game _______ well and _______ out very soon.
#44676
A
sells, is sold
B
sells, sells
C
is sold, sells
D
is sold, is sold