Some research workers completely          all those facts as though they never existed.
#101176
A
refuse
B
miss
C
leave
D
ignore
推荐题目
This is the first time that I _____ at the meeting.
#102465
A
had spoken
B
have spoken
C
spoke
D
speak
He ________ in American for five years, and now he works in Shanghai.
#102010
A
have worked
B
worked
C
had worked
D
have been working
Would you please keep silent? The weather report ______ and I want to listen to it.
#102812
A
is broadcast
B
has been broadcast
C
is being broadcast
D
had been broadcast
Because the shop _______, the T-shirts are sold at half price.
#104568
A
has closed down
B
closed down
C
is closing down
D
had closed down