Here are the correct answers for your questions:
Mother asked us
b) not to (The correct phrase is "Mother asked us not to eat before the meal.")They
a) have not (The correct phrase is "They have not done their project yet.")Nurlan always
c) gets (The correct sentence is "Nurlan always gets up at 7 o'clock.")Find the right pronoun.
c) we (The correct sentence is "We were pupils of the 9th grade last year.")Find the correct word.
c) difficult (The correct spelling is "difficult.")Complete the sentences, I like ...
d) drawing (The correct sentence is "I like drawing.")
Good luck with your studies!