These are the jobs of these verbs:
act
drive
train

It is used to talk about finished events that happened in the past in specific moment. You have to use a time expression.

Is used for facts, situations that are generally true.

It's the relative noun you use for things

This auxiliary verb is used for the past perfect

These are some things that robots CAN'T do.

You use it when you have a period of time (e.g. six years, four days).

This is the structure of the zero conditional

It's the relative noun you use for people

This participle deribes a characteristic of something or someone

How many syllables has the wor INTERESTING?

You use it when you have a specific point time (e.g. 2019, last week, I was a university student).

It's used in situations with possible future results.

It's the relative noun you use for places

This participle deribes the feeling someone has due to someone or something else

This verb means doing reservation of a hotel room.

It is used to talk about events that happened in the past and affect the present, or events that happened repeated times in the past and can repeat in the present.

This is the structure of the first conditional.

Complete the following sentences:
Do you know the girl _____ is talking to Carlos?
I love the invention _____ gives you access to new information.
I was born in a town _____ you can ride horses freely.

When did an event in past perfect happen?

These letters are missing in the following word
SIG*TSE**NG

These are the past participle forms of these verbs
drink, ride, come, run, grow

These are the forms you never use in the if clause.

This is the use of RELATIVE CLAUSES

Complete the following sentence:
I _____ (eat) tacos before I _____ (go) to the dentist.