The flu is believed ______ by viruses that like to reproduce in the cells inside the human nose and throat.
#90948
A
to be caused
B
to have caused
C
being caused
D
causing
推荐题目
 She said she was sorry _____ the train, so she had to stay here for another day.
#98326
A
missing
B
having missed
C
to miss
D
to have missed
--- _______ made her ashamed of herself? --- ______ the lowest mark in her class.
#97186
A
What; Because she got
B
Was it what; Getting
C
What was it that; She got
D
What was it that; Getting
When he ran downstairs, he tried to avoid ____by the teacher.
#93197
A
being seen
B
seeing
C
to be seen
D
to see