(2014·成都市重点中学联考)She can’t help________the house because she’s busy making a cake in the kitchen.
#99136
A
to clean 
B
cleaning
C
cleaned 
D
being cleaning
推荐题目
 ________ the classroom, the teacher found all the parents already______ there.
#103135
A
Entered; seated
B
Entering; seating
C
Entered; seating
D
Entering; seated
The project _______ a success as the income of the company increases every year. 
#102820
A
is proved
B
had proved
C
has proved
D
has been proved
—— Alice came back home the day before yesterday. —— Really ? Where _____ ? 
#104637
A
has she been
B
had she been
C
has she gone
D
had she gone
If we use the new recycling method, a large number of trees         .
#102768
A
are saved
B
will save
C
will be saved
D
have saved