express publishing pp.17,18 Flashcards
1
Q
massive
A
size
2
Q
rock
A
formations
3
Q
an underground
A
river
4
Q
geologists are interested
A
in rock formations
5
Q
tourists can’t help
A
but be surprised
6
Q
a river running
A
through the cave
7
Q
an entire underground
A
world
8
Q
the teacher accused the student of
A
cheating
9
Q
to solve mathematical
A
problems
10
Q
he had an amazing ability from a young
A
age
11
Q
his research led to many
A
inventions
12
Q
he worked endless
A
hours
13
Q
wireless
A
signal
14
Q
affordable
A
electricity
15
Q
disagree
A
about work and money
