Hello native English speakers and English learners.
Which of these is correct?
1a)I felt good mood today.
1b)I am in a good mood today.

2a)He set a world record.
2b)He made a world record.

3a)He is our common friend.
3b)He is our mutual friend.

4a)Where is the capital of Japan.
4b)What is the capital of Japan?

5)I will do anything I can for you.
5b)I do anything I can for you.[Image]

Question

Hello native English speakers and English learners. 
Which of these is correct?
1a)I felt good mood today.
1b)I am in a good mood today.

2a)He set a world record.
2b)He made a world record.

3a)He is our common friend.
3b)He is our mutual friend.

4a)Where is the capital of Japan.
4b)What is the capital of Japan?

5)I will do anything I can for you.
5b)I do anything I can for you.[Image]

Answer

1b)I am in a good mood today.
2a)He set a world record.
3b)He is our mutual friend.
4b)What is the capital of Japan?
5)I will do anything I can for you.
5b)I do anything I can for you.

Answer

Hello:

1b. (1a is ungrammatical)
2a. (2b is fine but unusual)
3 is trickier.  3a is grammatical; 3b is ungrammatical, but is more commonly heard than 3a, largely thanks to Charles Dickens!
4 are both grammatical, but they mean different things.  Answer to 4b: Tokyo.  Answer to 4a: on the south coast of Honshu.
5a.  (5b is ungrammatical)

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