I Choose a proper modal verb.
Your hair’s too long. I think you _____ get it cut.
Your clothes smell, and you’ve got a cough. You _____ smoke.
I’m going to bed. I _____ be up early tomorrow.
I’d like to meet your boyfriend. You _____ invite him round.
I _____ tell my parents where I am, then they don’t worry.
You _____ come with me if you don’t want to. I’ll go on my own.
I _____ work very hard because I have an exam next week.
You _____ work hard after your exam. You can have a holiday.
My father is a customs official so he always ____ wear a uniform at work.
.....but my mother is a teacher so she ____ wear a uniform at work.
I phoned the plumber because I _____ smell gas in the kitchen.
Jane and John saved and saved, and finally they _____ buy the house of their dreams.
I phoned yesterday, but I ____ get an answer. Where were you?
The neighbours were having a row, and I _____ hear every word they said.
____ you speak French before you moved to Paris?
II Match the following words with the appropriate definition.
encourages a process or activity to develop more quickly.
to base something on something
to describe or express something as an amount or a number
to receive an electronic signal and change it into a different form
to get back or find something that was lost, stolen or missing
an amount or a number of something
a secret way of writing, especially one in which a set of letters or symbols is used to represent others.
III Fill the gaps with the right word.
The information … produces a message, or information, to be transmitted.
Random disturbances, or …, on the channel cause the received signal to be somewhat different from the transmitted one.
The idea that something as … as ‘information’ could be quantified, analysed, and reduced to a mathematical formula attracted tremendous attention.
Information theory was introduced as a means to study and solve problems of communication or … of signals over channels.
The …, or transmitter, processes the message and changes it to a signal suitable for the channel.
It demonstrates that any communication system can be separated into components, which can be treated independently as … mathematical models.
Based on the received signal, the … then makes an estimate of the message and deliver it to the destination.
Using a statistical description for data, Shannon showed how information could be quantified with absolute …. .