Every possible means ______ to prevent the air pollution, but the sky is still not clear.
#86302
A
is used
B
are used
C
has been used
D
have been used
推荐题目
______children whose parents had died in the earthquake ____ sent to live with families in other cities.
#85934
A
A great number of; were
B
A great number of; was
C
The great number of; were
D
The great number of; was
As we all know, the number of Tibetan antelopes(藏羚羊) ________ becoming ___________.
#43648
A
is; less and less
B
are; less and less
C
is; smaller and smaller
D
are; smaller and smaller
The number of people invited to the party 200 but a number of them ___absent for different reasons.
#85851
A
were ; was
B
was ; were
C
was ; was
D
were ; were
I met the teacher in the street yesterday ________ taught me English three years ago.
#86230
A
which
B
when
C
where
D
who