Question

i have lost one of my gloves.I ____dropped it somewhere.
must have,must,could,would​

Answer 1

I have lost one of my gloves. I must have dropped it somewhere.

Explanation:

• "Must" is a modal verb. A modal verb is a type of verb that is used to indicate modality – that is: ability, likelihood, request, permission, suggestions, capacity, obligation, advice, or order. Modal verbs  accompany the "base ("infinitive") form" of another verb having "semantic content". Must  as a modal verb means "to express obligation" or "to express strong belief/opinion"
• In the above sentence when we use "must" with "have" it implies expressing an "opinion" about something which is logically "very likely". ( as in the above sentence it refers - its likely the gloves must have been dropped somewhere).  Hence, "must" as a modal verb means an "assumption" or to reach a "logical  conclusion" about "something"  which is  quite probable to be true. example, My bike has disappeared; someone must have stolen it.

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