Fill in the Blanks

The use of the word 'only' makes it clear that a precondition is talked about. So, it is a conditional sentence of the future and option 2 is the correct answer.

The sentence implies "The poor supply of electricity is a cause of slowdown in economy". Because of means as a result of something.

Due to means as a result of something (heavy rains here).

The action of being bedridden for two months precedes the action of the visit in the past, so the past perfect tense is required here-'had been bedridden'.

 If two actions in the future are in succession, the earlier of the two events will be in the simple present tense.

'By that time' indicates completion either in the time past, or at a point of time in the future. In the case of past completion, the usage will be had been teaching. In the case of future completion, the usage will be shall have been teaching.

Detract from means to divert attention from something.

Die down means to become less strong.

The sentence refers to the act of a doctor writing a prescription for medication. Prescribing is the correct verb form here.

To save money, one must reduce the amount spent. Cut down on is the correct phrasal verb meaning to reduce the consumption of something.

The sentence describes the speed of modern travel as something that would be unbelievable or shocking to ancestors. Staggering is the most appropriate adjective to describe such a surprising speed.

The phrase 'leaked out' is the standard idiomatic expression for information becoming public despite efforts to keep it secret. Other options like 'revealed' or 'disclosed' are transitive verbs that would require an object or a different sentence structure.

A milestone refers to a significant stage or event in the development of something, such as a career. 'Yard stick' is a measure of comparison, and 'signpost' is a guide, neither of which fits the context of receiving an award as well as 'milestone'.

'Acted up' means 'misbehaved'. This meaning fits in the framework of the meaning of the sentence.

'Bear away' means 'to win'. This meaning fits in the framework of the meaning of the sentence.