Grammar 16
1	a)	must
	b)	don't have to
	c)	had better
	d)	could
	e)	have to
	f)	can't
	g)	have to
	h)	should
	i)	might
	i)	should
2	a)	had better give up
	b)	should be/get there by
	c)	I have to bring
	d)	must be
	e)	have to have/use
	f)	you are unable to
	g)	can't be
	h)	is bound to be
	i)	are to report
	J)	ought to know
3	a)	J don't believe it
	b)	She always is.
	c)	It's the rule.
	d)	if you don't want to.
	e)	It's only natural.
	f)	It isn't allowed.
	g)	It's the rule.
	h)	It's not a good idea.
	i)	I expect so.
	i)	That's my advice.
4	a)	might
	b)	might
	c)	must
	d)	can
	e)	can't
	f)	might not
	g)	can't
	h)	might
	i)	must
	i)	mustn't
2
5   a)   Helen must feel really lonely.
b) You can't/mustn't park here.
c) Harry should take a holiday.
d) Brenda can't be over thirty.
e) Do I have to have a different driving licence for a motorbike?
f) What do you think I should do?
g) Mary can stand on her head.
h) You don't have to come with me if you don't want to.
i) Anybody can/could break into this house!
j)   The dentist will see you soon. He shouldn't be long.
a) 2
b) 2
c) 1
d) 1
e) 1
f) 2