He is_______ a pink blouse today. (   )

A．to

B．at

C．in

Chinese people eat mooncakes ______ the middle of autumn. (   )

A．on

B．in

C．for

There's ______ trousers over there. （   ）

A．pair of

B．a pair of

C．a pair

仿写句子
例：
What does he do?
He is a teacher.
How does he go to work?
He goes to work by car.

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The boys are______________ under the tree

A．have a picnic

B．having picnic

C．having a picnic