Fill in the blank with must, have to, or be to.
“It’s eight o’clock. The children ……............. go to bed”, Mr Brown said to the nurse.
A.must
B.had to
C.is to
D.was to

When I came, the salesperson was _________ to the customers how to use anew kind of washing machines.
A.demonstrating
B.proving
C.exposing
D.teaching

A human being is _________ of many, often conflicting, desires.
A.made
B.made up
C.consisted
D.created

The little girl was lull of _________ towards her wicked stepmother.
A.retribution
B.resentment
C.reprisal
D.vengeance

Mountaineers _________ climb Mount Everest must make reservations to do s, often up to seven years advance.
A.want to
B.they want to
C.who want
D.wanting to

Rarely _________ remove the entire root of a dandelion because of its length and sturdiness.
A.can the casual gardener
B.the casual gardener
C.the casual gardener will
D.does the casual gardener's

Professional people expect _________ when it is necessary to cancel an appointment.
A.you to call them
B.that you would call them
C.your calling them
D.that you are calling them

In a new culture, many embarrassing situations occur _________ a misunderstanding.
A.for
B.of
C.because of
D.because

Both liquids and gases flow freely from a container because they have _________ .
A.not definite shape
B.none definite shape
C.nothing definite shape
D.no definite shape

Which sentence is not true?
A.You spend a lot of money on stressful work.
B.You can’t work effectively if you are stressed.
C.You often make mistakes when you are hungry.
D.Quiet music eases your mind.