True of false

Posted by K. Yone on December 07, 2000

Hi!

Are all of the following sentences correct?

a) I'm skilled at carpentry.
b) I'm skilled with carpentry.
c) I have ability at carpentry.
d) I have ability with carpentry.

e) Is Jack home?
f) Is Jack at home?

g) Yes, he is here.
h) Yes, he is in here.

i) Mexico City with a population of some 24.4 million.
j) Mexico City with a population of some 24.4 millions.
k) Mexico City with a population of some 24.4 millions of people.

l) When do you think you'll be able to come back?

m) I doubt it that she has the answer very much.
n) I doubt it very much that she has the answer.
0) I doubt very much that she has the answer.

p) The question is whether it will satisfy all the requirements.
q) The question is if it will satisfy all the requirements.

I really appreciate your help.

Regards,