They _____ friends since they met in Shanghai.
#102457
A
have made
B
have become
C
have been
D
have turned
推荐题目
By the time he arrives in Beijing, we ______ here for two days.
#100865
A
will have stayed
B
will be staying
C
have been staying
D
have stayed
Mr. Li, who _____ his whole life to education, is retiring next month. 
#100073
A
devoted
B
is devoting
C
has devoted
D
had devoted
 The teacher told me that the earth _______ round.
#103196
A
was
B
is
C
were
D
are turning
Although there were only five athletes ____ in the race, it was a rather exciting one.
#102442
A
competing
B
having been competed
C
to compete
D
to be competed