一、根据画线字母组合的读音规则补全下列单词。
1. this at ese
2. those ere moer
3. thin ree irty
4. thick ing ief

1. th；th
2. th；th
3. th；th
4. th；th

本题考查字母组合th的常见发音规则：
1. 第1组参考词this中画线th发音为浊辅音/ð/，填入th即可组成符合该发音规则的正确单词that、these；
2. 第2组参考词those中画线th发音为浊辅音/ð/，填入th即可组成符合该发音规则的正确单词there、mother；
3. 第3组参考词thin中画线th发音为清辅音/θ/，填入th即可组成符合该发音规则的正确单词three、thirty；
4. 第4组参考词thick中画线th发音为清辅音/θ/，填入th即可组成符合该发音规则的正确单词thing、thief。

二、选择与所给单词同类的一项,将其序号填入括号里。
()1. monkey A. bird B. what
()2. jump A. fish B. climb
()3. is A. am B. they
()4. yours A. theirs B. my
()5. playing A. singing B. paint

1. A 2. B 3. A 4. A 5. A

三、根据句子或对话意思选词填空。
1. This is room. It's . (my; mine)
2. —Are all your books? —No, they aren't. (this; these)
3. —What you doing?
—I listening to music. (am; are)
4. — you want to fly like a bird? —Yes, I . (do; Do)
5. —Those are pictures.
—Ah! Those pictures are . (their; theirs)
6. —What is the bear doing? —It's . (play; playing)

1. my; mine 2. these
3. are; am 4. Do; do
5. their; theirs 6. playing