PP & PPC
GERUNDS & INFINITIVES
PAST PERFECT
RELATIVE CLAUSES
MODAL VERBS
100

She _____ (not finish) her homework yet.

She has not finished her homework yet.

100

I enjoy (read) before bed.

I enjoy reading before bed.

100

By the time she arrived, the movie _____ (start).

By the time she arrived, the movie had started.

100

The woman _____ helped me was very kind.

The woman who/that helped me was very kind.

100

You _____ (must/must to) wear a seatbelt.

You must wear a seatbelt.

200

I've _____ (live) in Canada since 2015.

I've lived/been living in Canada since 2015.

200
She decided _____ (take) the job.

She decided to take the job.

200

We _____ (finish) dinner before he came.

We had finished dinner before he came.

200

That's the café _____ we met.

That's the café where we met.

200

He _____ (can/must not) be home already. He just left!

He can't be home already. He just left! 

300

They _____ (study) English for three years.

They have studied/have been studying English for three years.

300

He suggested _____ (go) to the museum.

He suggested going to the museum.

300

I didn't recognize her because she _____ (change).

I didn't recognize her because she had changed.

300

I read a book _____ was very interesting.

I read a book which/that was very interesting.

300

You _____ (should/should to) see a doctor.

You should see a doctor.

400

He _____ already _____ (eat) lunch.

He has already eaten lunch.

400

They agreed _____ (meet) earlier.

They agreed to meet earlier.

400

He _____ never _____ (see) snow before that trip.

He had never seen snow before that trip.

400

The teacher _____ teaches math is on vacation.

The teacher who/that teaches math is on vacation.

400

They _____ (must/must to) be at the party. I saw their car.

They must be at the party. I saw their car.

500

How long _____ you _____ (wait) for the bus?

How long have you been waiting for the bus?

500

I'm good at _____ (solve) problems.

I'm good at solving problems.

500

They _____ (live) in London before they moved to Paris.

They had lived in London before they moved to Paris.

500

This is the hotel _____ we stayed.

This is the hotel where we stayed.

500

We _____ (could/should to) go to the beach tomorrow if it's sunny.

We could go to the beach tomorrow if it's sunny.