选词填空。
buy  should  know  sweater  going back
buy  should  know  sweater  going back
(1) What ________ we do for Mother’s Day?
(2) I ________ Amy likes skirts.
(3) Let’s ________ a gift for him.
(4) Amy is________ to the US.
(5) It’s cold. Let’s buy her a ________.