Three Questions, Please.

Hello,

Could you answer my questions, please.

Question1

No sooner _____ the news than she fainted.

A) she heard

B) had she heard

C) as she heard

D) she had heard

-Does the sentence mean "Once she heard the news, she fainted."?

-I choose (B). Is it correct?

____________________________

Question 2

It was a fine day for a picnic _____ rather cold.

A) if

B) though

C) so

D) therefore

-Does the sentence mean "It was a fine day for a picnic although it was cold."

-I choose (B). Is it correct?

Question 3

_____ study hard before an examination.

A) Most of students

B) Most of the students

C) Almost the students

- I see that both of the (A) and (B) are possible. What do you think?

Thanks in advance