Question

The museum will be open ____ half past eight _____ five o'clock in the evening.
a) At/to
b) From/till
c) Till/at
d) Of/until

Answer 1

Hint: Read the given phrase/sentence carefully. Try to make out the meaning of it and find the subject or the predicate or the main object of the sentence.

Complete answer:
 The given sentence gives information which says that the museum will be open between the two given timings. There are four options given, we have to choose the best one.
Now let us examine all the options to find out the correct answer -
Option ‘a' is At/to. It is not the correct option because “to” is not used in terms of time but in expressing motion or directions.
Option ‘b' is From/till. It is the correct option because it fits perfectly providing the sentence an appropriate meaning.
Option ‘c' is Till/at. It is not the correct option because “till” is used to denote up to the point in time or the event mentioned.
Option ‘d' is Of/until. It is not the correct option because “of” is used to express the relationship between a part and a whole.
As we have analyzed all the given options, we can easily figure out the correct option. Here, the words to be filled in the blank are - from/till. The complete sentence would be - The museum will be open from half-past eight till five o'clock in the evening. Hence, option 'b' is the correct option.

Note:
All the other options are plausible distractions. You must know the meaning and usage of all the given options.