--- Why? Tom, your shirt is so dirty! --- Mum, I ______ my storeroom downstairs.
#104102
A
cleaned
B
have cleaned
C
was cleaning
D
have been cleaning
推荐题目
Mr Lin, a famous writer, _______ our school last week.
#100412
A
visits
B
will visit
C
is visiting
D
visited
Tony is a lawyer now, but he      in a delivery company for six years.
#99549
A
has served
B
had served
C
was serving
D
served
During next June and August he _________ in the field with his parents. 
#103879
A
was working
B
will be working
C
will work
D
has worked
Don’t worry. The hard work that you do now ______later in life.
#102150
A
will be repaid
B
was being repaid
C
has been repaid
D
was repaid