Vocabulary
atmosphere
a mixture of gases that surrounds any planet
narrow
having a small distance from one side to another
Complete the sentences with an appropriate pronoun.
Have you seen an elephant? Yes, I've seen _________ in a zoo, but not in the wild.
one
Complete the second sentence so it means the same as the first, using the word in the bracket.
How was your trip to South Africa? Did you see ____________ interesting?
anything
process
a series of changes that happen naturally
organism
a single living plant, animal, virus, etc.
Complete the multi-word verb using the correct preposition.
I can't keep ____ with the other students in maths.
up
Complete the multi-word verb using the correct preposition.
You need sleep. You can't do _________ sleep.
without
compound
a chemical that combines two or more elements
be exposed to
to not be protected from something harmful
Complete the multi-word verb using the correct preposition.
The teacher always tells us ______ if we talk in class.
off
Complete the sentences using the comparative or superlative form of the adverb in the bracket.
On safari, you have to get up ______________ (much, early) than usual.
much earlier
frequency
the number of times that a wave is produced within a particular period, esp. within one second
emit
to send out gas, heat, light or noise
Complete the second sentence so it means the same as the first, using the word in the bracket.
Marek doesn't work nearly as hard as the others. (much): The others _______________________ .
The others work much harder than Marek.
Complete the second sentence so it means the same as the first, using the word in the bracket.
Yesterday we couldn't see the animals as clearly as today.
(more) Today ___________________________ .
Today we could/can see the animals more clearly than yesterday.
enzyme
a chemical substance produced by living cells which makes particular chemical reactions happen in animals and plants
molecule
the simplest unit of a chemical substance, usually a group of two or more atoms
Complete the second sentence so it means the same as the first, using the word in the bracket.
Kareem drives more quickly than Amal.
(as) Amal ______________________________ .
Amal doesn't drive as quickly as Kareem.
Complete the sentences using the comparative or superlative form of the adverb in the bracket.
Elephants run ______________ (much, slow) than Cheetahs.
much more slowly