Because and Because Of

Which sentence is incorrect?

• because I am sick, I can't go to school.

• Because of being sick, I can't go to school.

• Because of sick, I can't go to school.

• Because of sickness, I can't go to school.

THE MEETING WAS CANCELLED .... THAT HEAVY STORM.

• BECAUSE

• BECAUSE OF

SYIFA AND ARSY WERE LATE ... A FLAT TIRE

• BECAUSE

• BECAUSE OF

...... MELLY AND HELEN HAD AN ARGUMENT, EVERYONE LEFT EARLY

• BECAUSE

• BECAUSE OF

His succesd was ... his father's hard-work.

• Because

• Because of

..... JACK WAS LATE, WE MISSED THE BUS

• BECAUSE

• BECAUSE OF

I DON'T WANT TO EAT THIS CURRY .... THERE IS AN INSECT IN IT. 

• BECAUSE

• BECAUSE OF

I WAS DISAPPOINTED ... THE RESULT OF MY EXAM.

• BECAUSE

• BECAUSE OF

.... THE TEST IS SO HARD, I ALMOST GIVE UP.

• BECAUSE

• BECAUSE OF

The flight was delayed ... the rain

• because of

• because