1.Please, keep silent. You____speak during the exam.
a.may not
b.might not
c.needn't
d.must
2.You____drive at more than 70 miles per hour in the UK.
a.mustn't
b.needn't
c.may not
d.might not
3.You____go to the shop. I have already bought the milk.
a.ought to
b.needn't
c.should
d.may
4.You don't have to be afraid of bear,_____educating yourself about the dangers can help keep you safe
a.but b.so c.therefore d.although
5.Polar bears are beautiful animals,____, they are wild and unpredictable in nature.
a.despite b.however c.so d.therefore