What’sthis?Englishbook.A.It’sa-优题课

-- What’s this?
-- __________ English book.
A. It’s a B. It’s an C. This’s a

科目英语题型单选题难度中等

Welcome to my family. _______ my father Jack and my mother Tracy.
A. This isB. He is C. These are

I have a book. _______ book is in the bookcase.
A. A B. An C. The

代表“英国广播公司”的是：____。

_________. Is this your pen?

Thank you _____ your help.