Are you excited ______________ going on holiday next week?

Mrs. Liz was accused _______ having stolen the car.

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

The air at the seaside is good (at/for/on/of) health.

I came on Monday at ten o'clock .......... the morning.

The government is trying to make the country safe _____ terrorist attacks.

He was in orbit around the Earth __________ a speed of more than 17,000 miles per hour.

“What time will you arrive?” “I don’t know. It depends ......... the traffic.”

Were you aware _____ the regulations against smoking in this area?

Do you have any objections ....... this new road scheme?

He always prevents me_______ doing my duty.

I waited _____ 10 o'clock and then went home.

The car went .......... full speed.

Toxic chemicals in the air and land have also driven many species ______ the verge of extinction.

The pens made___________ plastic are very cheap.

He didn't dare to say it .......... my face.

It is .......... three o'clock; it is nearly a quarter past three.

If you want to lose weight, you must go ___________ a diet.

How would the mind deal _____________ the psychological tension?

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

Did they ask .......... me?