Subject–Verb Agreement

Everyone is required to attend the safety briefing.

💡 Everyone → singular → is

Each of the candidates has submitted a portfolio.

💡 Each → singular → has (ไม่ใช่ have)

Neither option seems viable at this stage.

💡 Neither (alone) → singular → seems

A number of employees were absent yesterday.

💡 A number of = หลายคน → plural verb (were)

The number of absent employees was surprisingly high.

💡 The number of = จำนวน → singular verb (was)

Neither the manager nor the employees were informed.

💡 noun ใกล้ verb = employees (plural) → were

Either the supervisor or the team members are responsible.

💡 noun ใกล้ verb = team members (plural) → are

Either the team members or the supervisor is responsible.

💡 noun ใกล้ verb = supervisor (singular) → is

The team is working on a new strategy.

💡 team = Collective noun → singular (is) ใน TOEIC

The committee has approved the proposal.

💡 committee → singular (has)

The staff is required to wear uniforms.

💡 staff = Collective → singular (is) — ระวัง! staff ไม่เติม -s

There is a problem with the system.

💡 a problem = singular → There is

There are several issues that need to be addressed.

💡 several issues = plural → There are

There has been a significant increase in demand.

💡 a significant increase = singular → There has been

Five hundred thousand baht was allocated for the project.

💡 จำนวนเงิน = หน่วยเดียว → was

Twenty years of experience is required for this position.

💡 ระยะเวลา = หน่วยเดียว → is