Question

Choose the word or phrase that best completes the sentence.
Please don't call me until ________ eight o'clock on Saturday morning.
A. after
B. at
C. by
D. to

Answer 1

Hint: Use appropriate subordinating conjunction that will link the two parts of the sentences together.

Complete answer:

Conjunctions are words that connect two words, phrases, sentences or groups of words. They are also known as connecting words as they have the power to connect two separate sentences and give them coherent meaning. Let us learn more about these conjunctions with the help of the given analysis.
In the given question, the sentence has two parts. The first part makes sense all by itself whereas the second part depends on the first part for meaning. Therefore, we need to use a subordinating conjunction that denotes the condition. This is best qualified by the conjunctional phrase until after. Therefore, the option ‘a’ is the correct answer.
Option B is at. The preposition is used to describe a general location or specific time. For example, I will meet you at 9:00 PM sharp. Therefore, this is not suitable in the given case. Therefore, option B is incorrect.
Option C is by. ‘By’ is also a preposition. This is used to denote the way of doing something or it is also used before a place. In spite of being a versatile proposition, it is not the most suitable answer to the given question. Therefore, option C is also incorrect.
Option D is to. A versatile preposition, to is used to denote various things. It also denotes direction, goal, and others. But in this case, time needs to be denoted that also in relation to the first part of the sentence, therefore, option D is also incorrect.
So, the correct answer is “Option A”.

Note:Understanding the context of the sentence will help you comprehend whether the sentence has a coordinating clause or a subordinating clause.