Review - Definitions & Conditional type 3

_______ is a disease caused by a coronavirus that was first reported in 2019 and became a pandemic.

______ __________: Avoiding direct contact with people (e.g. no high-fives)

_______: An injection to activate immunity from infectious diseases.

________ (plural): Something which can show a condition of a disease, e.g. a cough

________: A widespread occurence of an infectious disease.

_______: Keeping healthy and stopping diseases by being clean.

________: Most places closing to protect public safety or health.

_________: Being alone from others

If I ................... a smart boy, I would not have annoyed my mother.

• have been

• had been

• was

• had been being

If I had found her address, I ................................... her an invitation.

• had sent

• have sent

• would send

• would have sent