If my frirends have any problems, my door is ______ open to them.
#37083
A
never
B
seldom
C
sometimes
D
always
推荐题目
Either Eve or Herb ___________ been invited by Lucy’s parents already.
#37133
A
have  
B
has  
C
was  
D
were
-______do you go swimming?-Twice a week.        
#42576
A
How often
B
How far
C
How soon
D
How long