问题

Books are made __________ paper while paperis mainly made __________ wood.
A:of; of
B: from; from
C:of; from
D:from; of
B: from; from
C:of; from
D:from; of
正确答案是:
同类题型
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Tom and I _______ good friends . He _______ twelve.
__ to go on a diet, but the dishes atthe party were simply impossible to resist.