She can't help _____ the house because she's busy making a cake.
#94713
A
to clean
B
cleaning
C
cleaned
D
being cleaned
推荐题目
Our teacher entered the classroom, __________.
#92925
A
a book in hand
B
book in hand
C
book in his hand
D
a book in hands
It was in the street ______ I met John yesterday. 
#93804
A
where
B
which
C
that
D
when