Using the words given and other words, complete the second sentence so that it has a similar meaning to the first sentence. Do not change the word given.

There is a possibility that they won't visit us at the weekend.

MightThey … at the weekend.

I'm sure it wasn't Tim who called you because I saw him outside.

BeenIt … Tim who called you because I saw him outside.

I think you'll find the house easily, as the directions are quite clear.

OughtThe directions are quite clear, so you … the house easily.

I suppose Bruce has gone to the dentist since he had a terrible toothache.

HaveBruce … to the dentist since he had a terrible toothache.

It’s frustrating when you can’t communicate with foreigners.

AbleIt's frustrating when you … with foreigners.

Perhaps you didn't buy that watch from this shop.

CouldYou … that watch from another shop.

Gary couldn't remember where he had put his wallet.

WasGary … where he had put his wallet.

Karen, I’d like you to help me with the washing-up.

WillKaren … with the washing-up?

 

Dr Chris Smith, a science radio ("Naked Scientists") broadcaster is talking to Andy Hopper, the Professor of Computer Technology and Mike Muller about computing power and programming methods.

A) Read the conversation and complete it with words from the table.

Underpinning perhaps sophisticated popular substantial software Challenge dynamically inefficient favourite tension abstractions

Chris - Do we really need faster computing power, or are our programming methods just___________? What do we need to do to make sure we're programming our computers in the most efficient way possible?

Andy- There is a ___________ on the one hand by having more ___________ programming languages and therefore programs using them. It is easier to write some kinds of software. It is possibly easier to address large problems. But on the other hand, that introduces inefficiency, sometimes very ___________ inefficiency.

 

Listening

Dave Ansell is the science radio (“Naked Scientists”) science specialist is talking about where magnets obtain their energy.

A) Listen to his explanation and tick the features that he mentions.