— Why? Tom, your shirt is so dirty! — Mum, I __ my storeroom downstairs。
#104430
A
cleaned
B
have worked
C
was cleaning
D
have been cleaning
推荐题目
Last month, the Japanese government expressed their thanks for the aid they ______ from China.
#102034
A
receive
B
had received
C
have received
D
are receiving
— ________you read the story? —Yes. I_____________it at school. 
#104052
A
Have;read
B
Did;read
C
Have;haveread
D
Did;haveread
Hi, Jim. _________ seen you for ages. I really _______ see you here.
#103387
A
Haven’t, don’t expect
B
Haven’t, didn’t expect
C
Hadn’t, hadn’t expected
D
Hadn’t, wasn’t expected