请同人帮忙解答这些题目！

1、Paul doesn't know which shirt he should choose.(改为同义句）

Paul doesn't know which shirt__to___ _choose____。
2、This book is interesting.That book is less in-teresting.(合并为一句）
That book isn't ___as__ interesting__as___this one.
3、He didn't catch the last bus,so he had to go back on foot.(改为同义句）
He had to go back on foot__unless___he ___got__the last bus.
4、Close the door,or you'll catch a cold.(改为同义句）
__Could___ you_please____ __close___ the door,you'll catch a cold.
5、Will Tom be back soon?Could you tell us?(合并为一句）
Could you tell us whether Tom will be back soon?
6、He got up earlier in order to get to school on time.(改为同义句）
He got up earlier __so___ __that___ he could get to school on time.
7、"Light runs faster than sound,"the teacher told us.(改为宾语从句的复合句）
The teacher told us that light runs faster than sound.
该句表示的是普遍真理，从句用一般现在时

1. Paul doesn't know which shirt___to __ _choose____

2. That book isn't ___more__ interesting___than__this one.

3. He had to go back on foot__because___he _didn't____the last bus.

4. ___If __ you__don't___ close_____ the door,you'll catch a cold.

5. ?Could you tell us whether/if Tom be back soon?

6. He got up earlier ____so _ __that___ he could get to school on time.

7. The teacher told us that light  runs faster than sound.

1.to choose
2.as as
3.because miss
4.if do not
5.Could you tell us wether Tom will be back soon?
6.so that
7.The teacher told us that light runs faster than sound.

1. to choose

2. as ，as

3. since，miss

4. If ，do not

5. Could you tell us if Tom will be back soon？

6. so that

7. The teacher told us that light runs faster than sound。