His mother looked very tired，for she _____ the house herself all day.
#102009
A
had cleaned
B
has been cleaning
C
had been cleaning
D
has cleaned
推荐题目
I can guess you were in a hurry. You ______ your sweater inside out.
#104274
A
had worn
B
wore
C
were wearing
D
are wearing
The greatest pleasure I know is to do a good action quietly, and to have it _____ by accident.
#99890
A
find out
B
finding out
C
found out
D
be found out
– Where are you working now?– In Chongqing. But I _____ in Shanghai for 5 years.
#100056
A
worked
B
had worked
C
have worked
D
had been working
—Mike was rushed to hospital last night.Is he all right?—Really? But don’t worry！I________to the hospital and see him this afternoon.
#99401
A
will go
B
am going
C
have gone
D
went
---Do you know London at all?---No, this is the first time that I______ here．
#100192
A
was
B
came
C
have been
D
had been