Question

The train will depart at 5 p.m. It is 4.50 p.m. now. You feel that your
sister should have reached station to catch the train. Express your idea
using the phrase 'It's time....

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Answer 1

Answer:

it's time for my sister to reach the railway station

Answer 2

It's time that my sister has reached the train station to catch the train.

The question is given as follows:

The train will depart at 5 p.m.

It is 4.50 p.m.

You feel that your sister should have reached station to catch the train.

In order to construct a sentence with "it's time"..

We first add "that" to relate two sentences.

Then we describe our objective i.e., sister catching the train on time.

Thus, the final sentence is being constructed.