– Why you didn’t handed in your exercise paper?–Sorry, but I ____ that it should be turned in today.
#100688
A
didn’t know
B
hadn’t known
C
haven’t known
D
don’t know
推荐题目
After the meeting, she invited us to dinner at her home and treated us _____ many exotic foods we _____ before. It was really a wonderful treat. 
#102418
A
with; had never tasted
B
to; have never tasted
C
with; have never tasted
D
to; had never tasted
Ladies and gentlemen,please fasten your seat belts,the plane______.
#101863
A
takes off
B
is taking off
C
is going to take off
D
is to take off
Flight 3010______,I must be off now or I’ll be late.
#103587
A
to announce
B
is announced
C
is being announced
D
announced