Space Day of China falls________ April 24th every year.( )
A.onB.byC.atD.in
________ a beautiful girl she is!( )
How
What
Where
Who
She often practices _____ on weekends.( )
sing
sings
singing
to sing
Although they feel tired,_____ they still go on working.( )
and
but
so
/
It isn't easy for us ______ English well.( )
learn
learns
learning
to learn
Who cleaned the room?
Li Lei _________.( )
is
was
dose
did