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12
randomly
retain
tightly
PartI
preventcurrent
more
regularly
IV.Grammar:LetandMake
Analyzetheexamplesinthetablebelowandthencompletethe
sentences
What/
Who
Conductors
What/
Who
Conductors
allow
allow
let
let
somebody/
something
theelectrons
somebody/
something
theelectrons
to
to
do
pass
do
pass
something
throughthem
easily.
something
throughthem
easily.
1.
Copperwiresallowelectricalcurrentto…..
2.
Waterdoesnotletlight…..easily.
3.
Opticfibersletelectromagneticwaves……
4.
Moderntechnologyallows…….livemorecomfortablelives.
5.
Computersallow……communicatequickly.
6.
Roadsignslet…….safely.
10.
7.
8.
9.
Microwaveovensallow……..
Airplaneslet…..
Helmets……
Roadsidewalks……
