1.Earth is the only place we know o

1.Earth is the only place we know of in the universe that can support human life. Yet human activities are making the planet less fit to live on.As the western world carries on consuming two-thirds of the world's resources while half of the world's population do so..(32)..just..to stay alive we are rapidly destroying the...(33)..... resources we have by which all people can survive and prosper.

32.A.already
B.just => correct response
C.for
D.entirely

The word "just" is an adverb, and in this context, it means "only" => just to do something => only to do something (the OALD). Here are the relevant definition and usage examples from the OALD for "just" in this context.

9 only

just (for something)

I decided to learn Japanese just for fun.

just (to do something)
I waited an hour just to see you.

There is just one method that might work.

‘Can I help you?’ ‘No thanks, I'm just looking.’ (= in a shop/store)

while half of the world's population do so..(32)..just..to stay alive => (32) only to stay alive

33.A.alone
B.individual
C.lone
D.lonely=> there is a typo with this key. It doesn't make sense. The one word that makes sense in this context is "only"

I have re-checked your text on the Internet, and in fact, there was a typo in your question. The original text has D: only as the answer. You can verify your text at the following link:

http://www.flo-joe.co.uk/fce/students/tests/mchtst3.htm



For your next question, you skipped some sentences when copying the test, and that's why it was hard to follow your text. I have inserted the missing sentence or words (marked in bold blue letters) in your text, and the answer makes more sense this time.

2.The use of computers has meant students can study language programs at their own speed when and for how long they want- and no need to worry about the teacher having a favourite or doing..yet..(57).another boring lesson. What's more, in the virtual classrooms of the future the student will ... on their headset,and be transported into an imaginary school,choose their class,take the books they need off shelf and hold conservations with other computerized students

57.A.still
B.for
C.yet => is an adverb, and in this context it means "talking about something that has not happened but that you expect to happen" (the OALD)
=> no need to worry about teacher having a favourite or doing..yet..(57).another boring lesson => no need to worry about teacher having a favorite or doing soon again another boring lesson.
D.already