Question

Fill in the blanks with the most suitable option:
The party will start at ___________ Sunday
A. 8 o’ clock at
B. 8 o’ clock
C. On 8 o’ clock
D. At 8 o’ clock on

Answer 1

Hint:Time and days of the week must be preceded by a preposition keeping in mind the context.
Try to recall the preposition that must be used in front of the time and the day.
There are different prepositions used for day, date and time.

Complete answer:
Time is always preceded by a preposition i.e. ‘at’, whereas days of the week must be preceded by ‘on’. These are the grammar rules which are universal. It doesn’t change according to context, this rule is applicable in every case.

Here are a few examples to understand it much better:
They have scheduled the inauguration program at 5PM in the evening.
In view of the chilling winter ahead, my school would now open at 10AM in the morning. Hurray, I don’t have to wake up early in the morning!
Hurry up! The event is scheduled to begin at 9AM, and it’s already 8.45AM. I hope we don’t get stuck up in the traffic.
The family gathering is on this Sunday, and we are yet to prepare sweets for the guest.
I am advised to have this medicine at 9PM, after breakfast.
Will you be available on Saturday? I have to discuss important issues with you.

Hence the correct answer is option ‘D’.

Note::1.There are instances when we need not have the advised preposition. For example:
                               a. I will be completing that project assigned to me by this Friday
                               b. We are expected to reach the venue by 10AM sharp.
2. It depends on what meaning we want to convey. When we use ‘by’ we are giving them a time frame, whereas when we use ‘at’ we are setting a definite time.