如图，在正方形ABCD中，E为DC边上的点，连接BE，将ΔBCE绕点C顺时针方向旋转90°得到ΔDCF，连接EF，若∠BEC=60°，则∠EFD的度数为（ ）
I'm too fat，how can I become healthier？
You should eat______vegetables and take______exercise．（ ）
less，more
less，less
more，more
more，less
Your mother is very busy．She hardly does morning exercise，______．（ ）
isn't she
does she
doesn't she
is she．
They arrived at the airport of Huangquan Park______the morning of June 7th．（ ）
in
at
by
on
There______a book and four pens on the desk．（ ）
has
is
are
have．
Could you tell me where______the day after tomorrow？（ ）
you will go
will you go see
you have gone
you went．
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