（ ）当你想问：多少只鸭子？你可以说： A. How many ducks? B. How many cakes?
( ) was in front of you last Monday?
( ) Chinese people invented paper for .
( ) Nine childrentheir grandparents last week.
( ) The man sitsunder the tree.
( ) The mouse is front of the cat.
was in front of you last Monday?
.
their grandparents last week.their grandparents last week.
under the tree.
front of the cat.
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