Fill in the blank with the most appropriate sentence.
“I feel nervous. I've got an exam today.”
“_______________________________”
(a)Cheer up! Things can’t be that bad!
(b)That’s great. Have a good time.
(c)Poor you! That happens to me sometimes.
(d)Good luck! Do your best.

Hint: Read the given sentence carefully. Try to make out the core meaning of it. Find out the subject, predicate and the object of the given sentence.

Complete answer:In the given question, we have to fill in the blank with the correct response to the given sentence. The given sentence conveys that the first speaker is feeling nervous because he/she has an exam that day. In writing and speaking, there are four basic types of sentences that we use for different purposes:
(i)declarative sentences
(ii)interrogative sentences
(iii)imperative sentences
(iv)exclamatory sentences
Now, let us examine all the given options to find out the correct option :
(a)Cheer up! Things can’t be that bad! This cannot be the correct option as we say this when the person has gone through something bad already. Here, the person is just nervous and something bad hasn’t happened yet. It is an exclamatory sentence.
(b)That’s great. Have a good time. We cannot use this in the given blank as it is very inappropriate and isn’t the correct response.
(c)Poor you! That happens to me sometimes. It cannot be the correct answer as well, as it isn’t an appropriate response.
(d)Good luck! Do your best. It is the correct response as we say this when someone is about to do something and that person is nervous, or tense about it.
Hence, option ‘d’ is the correct option.

Note:For such types of questions, you must know the context of the given sentence to find out the most appropriate response for it.