( ) a. Yesterday my dad ______ a Christmas tree.
A. buy B. bought C. to buy
( ) b. The star always ______ on top.
A. goes B. go C. went
( ) c. We put our gifts ______ the tree.
A. from B. top C. under
( ) d. People usually give gifts to their family and friends ______ Christmas.
A. in B. of C. at
( ) e. We are going to ______ up the Christmas tree.
A. puts B. put C. putting

a. B
b. A
c. C
d. C
e. B

a. 题目中有“Yesterday”表示过去时，谓语动词应该用过去式，A选项为原形，B选项为过去式，C选项为不定式，故选B。
b. 题目中“always”表示一般现在时，主语“The star”为第三人称单数，谓语动词应该用第三人称单数形式，A选项为第三人称单数形式，B选项为原形，C选项为过去式，故选A。
c. 题目中描述的是把礼物放在树哪里，根据常识和语境，礼物通常放在树下，A选项表示“从……”，B选项表示“顶部”，C选项表示“在……下面”，故选C。
d. 题目中描述的是在圣诞节给礼物，在英语中通常用介词“at”来表示在某个节日，A选项表示“在……里面”，通常用于月份、年份等较长的时间段，B选项表示所属关系，C选项表示“在”，用于具体的时间点或节日，故选C。
e. 题目中“are going to”表示将来时，后面应该接动词原形，A选项为第三人称单数形式，B选项为原形，C选项为现在分词形式，故选B。

() a. Lynn thought Santa brought the gifts.
() b. Lynn’s gifts were beautiful toys.
() c. Li Ming’s gifts were pictures.
() d. Jenny thought her mum and dad brought the gifts.
() e. They put the Chinese lantern under the Christmas tree.

a. T
b. T
c. F
d. T
e. F

a. 由文中“Lynn is little! She thinks Santa brought them”可知，Lynn认为Santa带来了礼物，故a正确。
b. 文中提到“Santa brought her toys. They were very nice.”，“very nice”可理解为“beautiful”，故b正确。
c. 文中明确说“Li Ming had a gift from Santa. It was a camera.”，礼物是相机不是照片，故c错误。
d. 由“I think my mum and dad brought them”可知，Jenny认为是父母带来的礼物，故d正确。
e. 文中最后一句“put the Chinese lantern on the Christmas tree”，是在树上不是树下，故e错误。