单项选择-----The box is too heavy to carry.What’s in it?-----Oh,

-----The box is too heavy to carry.What’s in it?-----Oh,it is ______ booka.

A.filled with B.covered with C.used for D.asked for

We can be thankful every day ,not just ______Thanksgiving Day

A.in B.on C.to D.by

My mother cooks it ______ a low temperature for a long time

A.in B.at C.on D.over

----- ______ do most people celebrate this day?-----They celebrate it by eating dumplings

A.What B.How C.When D.Where