Пожалуйста, проверьте и помогите решить задание 2.

IV.Choose the correct variant.


My car isn’t very new.Your car is ___ than my car. ( A. as never as/ B. the newest/C. more new/ D. newer than)
Our English
lessons at school were very boring.We ___ exercises and learn a lot of
grammar rules by heart.(A.must to write/B.must write/C.had to write/D.to write)
New York is ____city of the USA.(A.the largest/ B.the larger/ C.lergest/ D.most largest)
It was a very difficult text.I ____ look up a
lot of words in the dictionary.(A.must/ B.have to/ C.had to/ D. must to)  
У меня 1.newer than  2.не знаю (помогите решить) 3.the largest  4.had to