Some large cities may have to ban cars.... the city center to wipe out smoke.

When are you leaving _________ Hanoi?

His opinion is different _____________ mine.

Don't put ____ until tomorrow what you can do today.

John has gone away. He’ll be back ......... a week.

Clearing forests for timber has resulted ....... the loss of biodiversity.

He was happy because his poems had been translated ________several languages.

The flood was responsible __________ damaging the crop.

The initiative for founding the Red Cross came _____ a Swiss man called Jean Henri Dunant.

She was engaged .......... him for ten months before they got married.

Write your name ............ the top of the page.

Our flat is ......... the second floor of the building.

She wanted to borrow some books__________ him but she was shy ______________ asking.

Don’t ask me to decide, I’m not very good ............ making decisions.

We hadn’t arranged to meet. We met ...........

I think your mother should let you make___________ your own mind.

It is important to have someone that you can confide ________.

This apartment would be too crowded for two people, but it is perfect ___ one.

Do you know anyone who might be interested _________buying an old car?

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

He's not very keen _____ watching football, but his wife is.