Need help with Preposition, thanks teachers!

[Help Wanted]

Hello teachers,

1.
Can I say, " wearing a watch on her hand"?

2.
Am I correct if I say," The one reading a book is Helen." OR should it be,
"The one who is reading a book is Helen.

3.
Is it compulsory to have a hyphen in " seventy-five"? OR seventy five ( still correct???)

4. The manager was angry when he found his assistant had taken (correct? or took) French leave again.
Thank you very much for advising.

[Casiopea]

1a. She is wearing a watch.
1b. She is wearing a watch on her wrist.
Note, a watch is usually worn around one's wrist, or on one's wrist.

2a. The one reading a book is Helen.
2b. The one who is reading a book is Helen.

3a. seventy-five
3b. seventy five (people use it, but the hyphen is best. It helps to show that the two words are related0

4. ...when he found (that) his assistant had taken ...

[blacknomi]

1. "on" is okay but I would use "wrist" instead of hand.

Superficially the hand consists of a broad palm attached to the forearm by a joint called the wrist.
http://encarta.msn.com/encnet/refpag...efid=761568440

2. Both are fine, but I'd use "the book".
3. It's a rule in grammar books. You can break though.
4. Both are good.

[Help Wanted]

Thank you soooooo much for your great advice, teacher Casiopea and teacher Blacknomi!

[blacknomi]

I'm glad I didn't ruin your day! You're most welcome.

[Casiopea]

Originally Posted by blacknomi

I'm glad I didn't ruin your day! You're most welcome.

You could never ruin a person's day, blacknomi.

[blacknomi]

I talk as if I were a tornado!