Question

Join the following sentences to make one complete sentence without using and, but, or so:
My grandfather is very old, he is very active.

Answer 1

Hint: Here, we are talking synthesis of sentences, i.e. combining a number of simple sentences into one new sentence. In the above-given question we have a complex sentence consisting of the principal or main clause and a subordinate clause.

Complete answer:
To combine two or more sentences into one we can use a participle, a noun or phrase, preposition, conjunction, and adverb, etc.
Now, you must understand that there can be a number of different correct answers for the above-given sentence. Because with the use of different tools (adverb, preposition, etc) we can form different yet correct sentences.
Now we know that we can have multiple correct answers but we must keep in mind that we cannot use - and, but, so to combine the sentence.
So, some of the sentences that can be formed for the above-given sentence (without using - and, but, so) are –

a). My grandfather is an active old man
b). Although my grandfather is very old, he is very active
c). My grandfather is very old yet he is very active
d). Although my grandfather is very old still he is very active

All the above sentences are grammatically correct and can be used as a complete sentence for the above-given sentence as they give both the information that the person's grandfather is old but he is very active.

Note: Try not to change the meaning of the sentence while you solve it. This is because if you change the meaning then it will not be similar to the given sentence and hence it will be wrong.