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A-D (wonder ↔ injected): "Has wonder" is incorrect; it should be "has injected" to fit the sentence structure. "People wonder" is the correct phrase. B & C are correct at their places and does not require any replacement. Thus, swapping A-D & B-C makes the sentence grammatically and contextually correct. The American President has injected (D) a disorienting volatility (B) into the world economy, leaving it off (C) balance as people wonder (A) what he will do next.
The most reactive among the halogens is-
The element used in the manufacture of safety matches is —
The most reactive among the halogens is-
Which metal is extracted from seawater?
Milk tastes sour when kept in the open for sometimes due to the formation of-
The noble gas used in radiotherapy is
Which one amongst the following is not a Green House gas?
The important ore of aluminium is-
Which one amongst the following is not a Green House gas?
The gas used for filling weather balloons is-