He has waited _____ her for a long time.

The children are really excited _____ their summer vacation.

She said to me “why don’t you relax___________ a while?”

The Englishcontest organized___________ our teachers is an annual event in my school.

Education in many countries is compulsory ....... the age of 16.

When are you leaving ......... Singapore? This week or next week?

Please write your answers ......... ink.

She is very jealous ......... her sister.

The accident was my fault, so I had to pay for the damage ........... the other car.

Smoking is harmful _____________ our health.

Maintaining biodiversity is important _______ us in many ways.

The problem is becoming serious. We have to discuss ............ it.

Jane doesn't spend much money______ clothes.

When ______ Rome do as the Romans do.

Linda is a keen photographer. She likes taking pictures ......... people.

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

We are proud (at /in/on/of) our people's heroic tradition.

Thank you. You are kind ............ me.

He succeeded ________ getting a scholarship.

Oxygen, fuel, and hear are all necessary _____ combustion.

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