The teacher told hai students laughing

1.the teacher told hai students ......... laughing
A.stop    B.stopping      C.to stop      D.stopped
2.this is.....city that I have ever been to.
A.the busiest       B.the busier      C.the most busy          D.the most busiest
3.We couldn't go out.......it was very stormy.
A.because of      B.because      C.so     D.but
4.If the weather gets..........tomorrow, we won't go to the beach.
A.worse     B.nicer       C.more bad       D.better