A.Do you know what to say to a person on his birthday
B.It takes us about 45 minutes to go to the station
C.we can see buses come and go in a busy street
D.It is too late to catch the 9:30 train
第1题:
A. followed,followed
B. followed,following
C. following,followed
D. following,following
第2题:
A.use
B.uses
C.using
D.used
第3题:
第4题:
A)using
B)use
C)to use
D)used
第5题:
第6题: