Past participles quiz.1) Write the participles of these irregular verbs:

Infinitive Past participle

Come

Find

Keep

Wear

Send

Ring

Choose

Forget

Throw

Know

Drink

Steal

2) Complete the blanks with the correct participle form of the verbs (regular or irregular) in brackets:

Police in north-east England arrest man as part of Twitter abuse investigation

Police investigating allegations of harassment on Twitter have (arrest) ______________1 a 25-year-old man in north-east England.

The online abuse was (aim) ______________ 2 at Labour MP Stella Creasy and Caroline Criado-Perez, a feminist campaigner.

The arrest by Northumbria police on Tuesday was (carry) ______________ 3 out on behalf of the Metropolitan police and came two days after a 21-year-old was(detain) ______________ 4 in the Manchester area on suspicion of committing harassment offences.

The police operation began after Criado-Perez was (flood) ______________ 5 on Twitter with abuse and threats of rape.

A Met spokesman said on Tuesday: "This arrest will form part of two ongoing MPS [Metropolitan police service] investigations relating to allegations made to police by two separate victims, who made reports of malicious communication to police on 25 and 29 July."

She has (say) ______________ 7 Twitter needs to "get a grip" on security, claiming the social network was ill-equipped to handle episodes of abuse and needed to work more closely with police.

Twitter has (be) ______________ 8 in contact with the police over the abuse.