I can't afford to have a holiday abroad on my salary.
Correct answer: C) afford
"Afford" means to have enough money or resources to be able to do something.
They are twins and look very alike.
Correct answer: A) alike
"Alike" is the correct word when talking about things or people that look very similar.
It is a very popular play, and it would be wise to book seats well in advance.
Correct answer: B) book
"Book" is the correct word when reserving tickets or seats ahead of time.
He's not capable of learning German in six months.
Correct answer: E) capable
"Capable" means having the ability or qualities necessary to do something.
There was a large box behind the door and John could not avoid falling over it.
Correct answer: B) avoid
"Avoid" means to keep away from or prevent something from happening