So far, all of the infected people are thought _______ the flu after direct contact with sick birds.
#92384
A
to have caught
B
having caught
C
to catch
D
being caught
推荐题目
Thomas _____ in inventing many electrical machines
#93754
A
was successful
B
succeed
C
was success
D
successes
 It was the first time that I ______ Jackson’s songs.
#92057
A
have listened
B
have listened to
C
had listened to
D
had listened