When I entered the step-classroom (阶梯教室), the lecture __________ and the audience __________ attentively.
#101262
A
began, listened
B
was begun, was listening
C
had begun, listened
D
had begun, were listening
推荐题目
---Mom, can we move into our new house this weekend? ---No, it _________.
#102404
A
is painted
B
is painting
C
was painted
D
is being painted
--Why does the lake smell terrible? -- Because a large amount of water_______.
#99621
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
A new cinema          here. They hope to finish it next month. 
#101255
A
will be building
B
is built
C
has been built
D
is being built