a) Traffic lights use colors to ____________ drivers.
warn
a) Elephants are ____________ (heavy) than horses.
heavier
a) A robot is a type of ____________.
machine
You _____ brush your teeth every day.
must / have to
a) The classroom is empty. The students ____________ be at lunch.
must
b) Orange is a very ____________ color.
bright
b) English is ____________ (interesting) History.
more interesting
b) Teenagers use ____________ such as Instagram.
social media
b) Visitors ____________ not enter this area.
can't / may not / must not
b) Sofia practices every day. She ____________ be a great athlete.
must
c) My uncle is ____________ and has trouble seeing some colors.
colorblind
c) July is the ____________ (hot) month of the year in some countries.
hottest
c) The map shows the exact ____________ of the museum.
location
____________ I borrow your pen?
Can / May
a) He must be at work. His car is in the parking lot.
Certain, possible or impossible?
Certain
d) Many people wear white at a ____________.
wedding
d) This is the ____________ (beautiful) painting in the museum.
most beautiful
d) I have the ___________ of speaking two languages.
ability
should
They might travel next month.
Certain, possible or impossible?
Possible
e) Good companies make people ____________ them.
trust
e) This book is the ______ (good).
best
Students can use technology to ____ their learning.
improve
You _____ go if you don't want to.
don't have to
That can't be Emma. She is on vacation.
Certain, possible or impossible?
Impossible.