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 end of last month, ten primary schools _________ with the help of Project Hope. 
#100770
A
had set up
B
had been set up
C
was set up
D
set up
Ladies and gentlemen,please fasten your seat belts.The plane       .
#102007
A
takes off
B
took off
C
is taking off
D
has taken off
By the time these books were published,  he _____ addicted to them.
#102731
A
had become
B
becomes
C
has become
D
became