I’m studying medicine. I want to ________ in genetics.
A.specialize
B.specialist
C.special
D.specially

The city council should ______ this road.
A.wide
B.widen
C.widely
D.widened

The time we spent apart only _____ my love for him.
A.strength
B.strong
C.strengthened
D.strongly

The plant’s plans will _________ thousands of lives.
A.danger
B.endanger
C.dangerous
D.dangerously

Could you _______ your name here, please?
A.signing
B.signal
C.signature
D.sign

His speech was too long. He should have ______ it.
A.short
B.shorten
C.shortened
D.shortly

He always thinks he's right. He never ______ for his mistakes.
A.apologies
B.apologise
C.apology
D.apologizes

Tony had little difficulty in passing the examination, ....he has a very good foundation in English.
A.since
B. as
C.for
D.because

.... you are over 18, you can join the army.
A.As long as
B.Due to
C.Because of
D.On account of

Jane joined the English Club.... .
A.because of she wanted to improve her English
B.because she wanted to improve her English
C.thanks to her improving English
D.due to her improvement of English