我国北方地区居民屋顶坡度小,墙体较厚,形成这样特点的主要原因( )
The teacher speaks very loudly ______ all the students can hear her.( )
so that
because
since
when
We have seen the film _____________.( )
already
ever
yet
just
My classmates ______ about the World Cup when our teacher came in.( )
talk
talked
are talking
were talking
Mother _____ me a nice present on my next birthday.( )
gives
gave
will give
has give
Where is your mother?
She _________ the dishes in the kitchen.( )
do
does
did
is doing