The worst point of thick smog __________ .
A.led to many deaths
B.had no effect
C.was overcome
D.would never happen

Choose the best answer to complete the following questions
It’s not easy to save the Earth..............destruction, but we have to try.
A.with
B.from
C.to
D.cross

Choose the best answer to complete the following questions
We at EarthWatch care about the damage that’s being done................. our environment.
A.to
B.with
C.for
D.up

.................. my view, nobody has really seen a ghost.
A.at
B.in
C.across
D.under

Her brothers were never mean _______  her.
A.with
B.off
C.by
D.to

Choose A, B, C or D to complete the following sentences
I come fromVietnamso I am not used to _____________ on the left.
A.drive                               
B.drove
C.driven                          
D.driving

Choose A, B, C or D to complete the following sentences
It seem difficult for us _________ abroad at the moment.
A.go 
B.to go
C.went 
D.gone

Choose A, B, C or D to complete the following sentences
Don’t forget to add sugar to the mixture. This __________ is important.
A.add 
B.addition 
C.additional 
D.additionally

_________ (30)
A. Their
B.His
C. Its
D.Theirs

Identify the one underlined word or phrase that must be changed in order  to make the sentence correct
John’s friends had celebrated a farewell party for him last Sunday.
A.John’s friends  
B.for   
C.a farewell party  
D.had celebrated