Choose the best answer to complete each sentence.
Phone mebeforeten;_____ I’llbetoobusy totalktoyou.
A.unless
B.whether
C.otherwise
D.if

Choose the best answer to complete each sentence.
In most _____ developed countries, up to 50% of _____ population enters higher education at some time in their lives.
A.Ø / Ø
B.the / Ø
C.Ø / the
D.the / a

Choose the underlined part named A, B, C, or D that is incorrect.
Most oxygen atoms have eight neutrons, but a small amount have nine or ten .
A.Most
B.have
C.amount
D.nine or ten

Choose the underlined part named A, B, C, or D that is incorrect.
Dolphins and chimps are like in that they have been shown to have language skills.
A.are
B.like
C.in that
D.have been shown

________ (1)
A.participate
B.participated
C.participating
D.participately

Choose the best answer to complete each sentence.
_____every industry in our modern world requires the work of engineers.
A.Wholly
B.Hardly
C.Most
D.Virtually

Choose the best answer to complete each sentence.
When the electricity failed, he _____a match to find the candles.
A.rubbed
B.scratched
C.struck
D.started

Choose the best answer to complete each sentence.
The book says that the revolution was_____ off by the assassination of the state governor.
A.launched
B.cropped
C.triggered
D.prompted

Choose the best answer to complete each sentence.
He suddenly saw Sue _____the room. He pushed his way_____ the crowd of people to get to her.
A.across/through
B.over/through
C.over/along
D.across/across

Choose the best answer to complete each sentence.
If I were you, I would regard their offer with considerable _____, because it seems too good to be true.
A.suspicion
B.doubt
C.reservation
D.disbelief