-- Yes，they are.

A. Are; book B. Are; books

C. Is; book D. Is; books

【题目】当你看到垃圾，请及时把它捡起来。
When you see the rubbish，pleaseit

A. of B. at C. for D. on

【题目】My sister is short, ______ I am tall.
A.and
B.so
C.but
D.For

--Fine, thanks.

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

【题目】在茶会上他们做了一个奇怪的游戏。
They at the

A．how can do B．what can do

C．how to do D．what to do

【题目】—______ they have a new ruler?
—No, they ______.
A.Are; aren't
B.Do; aren't
C.Are; don't
D.Do; don't

【题目】—What's this ______ English?
—It's a book.
A.to
B.in
C.of
D.For

【题目】他和父亲肩并肩站着。
He is standing with his father