—Are these pens ?
—Yes, _____.[]
A. these are
B. they are
C. there are
D. they're
答案:B。
Are these pictures level?
这些画挂齐了吗?
Are these newspaper reports true?
报纸上这些报道属实吗?
What are these shoes doing on my desk?
这些鞋怎么在我的书桌上呢?
Are these seats taken?
这些座位有人吗?