All MCQs

The past decision has an unreal present consequence.
A past perfect condition combines with a present conditional result.

The third conditional refers to an unreal past condition and result.
The result uses 'would have' plus a past participle.

The second conditional describes an unreal or unlikely present situation.
Its result clause uses 'would' plus the base verb.

The first conditional describes a realistic future possibility.
The result clause uses 'will' plus the base verb.

The zero conditional expresses a general scientific result.
Both clauses normally use the simple present.

A comma separates the reporting clause from the quotation.
The final period is placed inside the closing quotation mark in this style.

'Shall I' seeking guidance is often reported with 'should.'
The yes-no question uses 'whether' and statement word order.

Obligatory 'must' often changes to 'had to' in past reported speech.
'Now' changes to 'then.'

'Said to' becomes 'told' with an object, and 'can' backshifts to 'could.'
Pronouns change according to the participants.

With a present reporting verb, tense backshift is generally unnecessary.
The statement keeps the present tense because it remains current.

Reported questions use statement word order after the wh-word.
The present tense backshifts to the past.

'Let us' expressing a proposal is reported with 'suggested.'
A that-clause with 'should' correctly conveys the suggestion.