【急】5个选择题.帮我看看解释下

【急】5个选择题.帮我看看解释下
1._______ it ained,____ the football match was put off.
A because;so
B because of;
C because;
D as;so
2._____ bad weather!
A how
B what
C what a
D what an
3.You look ____ than before ,why?
A more thin
B more thinner
C much thinner
D much more thin
4.I think oranges are ____ of all the fruits
A delicious
B much delicious
C more delicious
D the most delicious
5.Stop ____ fire.It's dangerous
A to play
B playing and
C to play with
D playing with