Unit 11 Flashcard

Front

It’s very easy now to __________ a message to your friends.

Back

send

Front

We use emails and messages to __________.

Back

communicate

Front

I use my smartphone to __________ a video call.

Back

make

Front

The mail was first __________ in Persia.

Back

invented

Front

We must find a __________ to the problem of pollution.

Back

solution

Front

The __________ was invented in the 1830s.

Back

telegraph

Front

Some parcels are __________ by drones.

Back

delivered

Front

A / An __________ is a small machine or invention that does something useful.

Back

gadget

Front

__________ were invented so that cars could move.

Back

Engines

Front

Scientists are __________ some research on drones.

Back

doing