生产、生活中使用的许多东西都可看作能量转换器,它们把能量从一种形式转化为另一种形式,下列电器在工作过程中把电能转化为机械能的是( )
They have been friends ________ they first met.
since
while
before
after
— Excuse me, what is Nick doing?
— Look! He ________ flowers outside.
waters
watered
is watering
has watered
This year, the family went camping on ________ Day, June 1st.
Child
Child’s
Children
Children’s
We must clean up ________ classroom before going home.
we
us
our
ours
There is ________ bank across from the hospital.
a
an
the
/