He congratulated me_______ winning the competition.

Have you washed your hands______________ having lunch?

Hurry up! We’ve got to go ......... five minutes.

Many students aren't keen ....... their study at school.

........... we didn’t like each other very much, but ........... we became good friends.

Why were you absent ____________ class this morning?

Since all vehicles were banned from the city centre, the air has been safe ........... pollution.

This variety of seed is inferior ______ the type I planted last year.

Aren't you glad that you went to the party with us .......... all?

I'm very grateful .......... her ......... help.

I work hard .......... help my family.

The river Rhine flows _____ the North sea.

We are present (at/in/to/of) the lecture yesterday.

Maintaining biodiversity is important _______ us in many ways.

She is serious (with/about/of/for) learning to be a doctor.

She gave some advice .......... her brother.

We’re having a party ......... Sunday. Can you come?

This organization is quick __________ sending relief goods to the flooded areas.

Smoking is harmful _____________ our health.

This book is based _____ part on fact.

She has suffered (from/to/with/about) her heart attack.