To "reckon in" something means to include it in a calculation.

Water can be reduced ____ oxygen and hydrogen by electrolysis.
(a) to (b) from (c) on (d) out

To be "reckoned as" something means to be considered or regarded as that thing.

When you submit your claim, don't forget to reckon ____ the money spent on petrol.
(a) on (b) in (c) over (d) into

The phrasal verb "reasoned into" means to persuade someone to do something by giving them reasons.

Investment in this area is reckoned ____ money poured down the drain.
(a) as (b) for (c) with (d) into

The phrasal verb "rattle on" means to talk continuously and rapidly about something.

I am afraid he can not be reasoned ____ making a public protest.
(a) to (b) into (c) for (d) out

The phrasal verb "rattled off" means to say something quickly and without effort.

I found his company unbearable. He could rattle ____ for hours about absolutely nothing at all.
(a) on (b) off (c) in (d) with

The verb "rank" is followed by the preposition "as" when it means to be considered or classified in a certain way.

Mr. Latif rattled ____ a list that seemed to contain everyone of any celebrity.
(a) in (b) on (c) off (d) to

To "raise an objection to" something means to express opposition to it.

He rank ____ one of the most remarkable president of our time.
(a) for (b) as (c) on (d) at

The verb "radiate" is followed by the preposition "from," which means to emit something from a source.

I tried to raise objection ____ the situation, but it was no good.
(a) to (b) in (c) for (d) over

The verb "qualify" is followed by the preposition "for" when it means to meet the requirements for something.

Dangerous emissions radiate ____ plutonium.
(a) in (b) from (c) to (d) with

The phrasal verb "puzzle over" means to think about a problem or question until you understand it.

You qualify ____ the vote, but Humza won't qualify till he is eighteen.
(a) for (b) to (c) with (d) on