The glass fell down and was _______ pieces. I had to buy a new one.
in pieces 是固定搭配，意为“破碎”，所缺的介词为 in。
—Here are the workbooks.
—Thank you. I'll ______ them on time.
keep 意为“保管；保存”；return 意为“归还”；borrow 意为“借”。题干意思：——这些是练习册。——谢谢。我会按时归还的。答案为B。
I can't watch TV. I can't play basketball,______. Why?
句意：“我不能看电视。我也不能打篮球，为什么？”根据本题语境，表示“也”，而且位于否定句句末的词是 either，故答案为B。