Every possible means ______ to prevent the air pollution, but the sky is still not clear.
#85598
A
has been used
B
have been used
C
is used
D
are used
推荐题目
The famous singer and dancer____ our party this evening.
#85670
A
are going to attend
B
was to attend
C
were to attend
D
is going to attend
(2013·高考福建卷)The famous musician，as well as his students，________ to perform at the opening ceremony of the 2012 Taipei Flower Expo.
#85586
A
were invited
B
was invited
C
have been invited
D
has been invited
The boy’s parents, who let him play football indoors, rather than the boy ________ to blame for the broken window.
#86257
A
was
B
be
C
to be
D
were