2.In the sentence: "Some people already have one in their home, but in a few years from now, 3D won't be as expensive as they are today." What does the word "expensive" mean?
A-kind
B-unsual
C-costs a lot
D-inventions

3.Choose the correct answer to complete the dialogue:
A: I am hungry.
B:
A-No problem.
B-sounds great!
C-you have to sleep early
D-Don't worry, I will order food for you.

4.She is going to to London next summer.
A-travel
B-travels
C-travelled
D-travelling

5.Do as shown between brackets:
I think robots (work) in hospitals in the future.
(correct the verb with Future Will)

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2.  C-costs a lot

3.  D-Don't worry, I will order food for you.

4. A-travel

5. will work

Explanation:

2. Word expensive means that something has a high monetary value and that it costs a lot. The sentence tries to say that 3D today costs a lot so only a few people own it personally. But it implies that in the future its value will fall and it will become more common when it starts being more monetary approachable to people.3. Out of all the answer options, “Don't worry, I will order food for you.” is the most logical one. Because the first sentence is someone stating that they are hungry, it is logical that the second one is the person giving them the answer to their problems. In this case, that is ordering the food.4. The sentence uses future tense with going to structure. These sentences using this structure use form subjects + CORRECT FOR OF THE VERB “BE” + GOING TO + verb in the infinitive. This structure is used for the future events that we are certain about (here it is the journey to London which is probably booked in advance). The verb to be here is correctly used in the third singular person, as we see “she” is the subject – therefore the correct form will be “is”. Finally, we use the infinitive of the verb “travel” and it means the verb stays the same.5. Correct full sentence is “I think robots will work in the hospitals in the future”. The form of future will is built is WILL + infinitive verb, therefore will stay the same, and will is added in front of it. This form is used when something is not certain when we only suggest it or think of it when it is a rapid decision or promise.