Many cities issued a warning of air pollution for PM-2.5 readings, which became Concern of all the people
#8563
A
the; the
B
the;/
C
/;a
D
an;a
推荐题目
Although everything seems to have been taken into consideration， accident can happen when the astronauts walk in space．
#9795
A
不填；the
B
an；the
C
the；the
D
an；不填
_______ new decision has been made that those who cheat in _______ examinations will not be recommended to colleges or universities.
#8035
A
The; a
B
A; an
C
不填; 不填
D
A；不填
-Jack，I believe that grand piano is just right for our living room． -It’s great，but do you think we still have_________room for it?
#9787
A
／
B
a
C
an
D
the
-- Have you seen ______pen? I left it here this morning-- Is it ______black one? I think I saw it somewhere
#8449
A
a；the
B
the；the
C
a；a
D
the；a
We live in ____ neighbourhood of the school and go to school on ____ foot.
#8724
A
the; /
B
the; the
C
a; /
D
a; the